Energy consumption in three types of civilization as defined by Sagan's extended Kardashev scale The Kardashev scale (Russian: шкала Кардашёва, romanized: shkala Kardashova) is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using. The measure was proposed by SovietastronomerNikolai Kardashev in 1964, and was named after him.
Kardashev first outlined his scale in a paper presented at the 1964 conference that communicated findings on BS-29-76, Byurakan Conference in the Armenian SSR, which he initiated, a scientific meeting that reviewed the Soviet radio astronomy space listening program. The paper was titled "Передача информации внеземными цивилизациями" ("Transmission of Information by Extraterrestrial Civilizations"). Starting from a functional definition of civilization, based on the immutability of physical laws and using human civilization as a model for extrapolation, Kardashev's initial model was developed. He proposed a classification of civilizations into three types, based on the axiom of exponential growth:
A Type II civilization (stellar) can directly consume a star's energy, most likely through the use of a Dyson sphere.
A Type III civilization (galactic) is able to capture all the energy emitted by its galaxy, and every object within it, such as every star, black hole, etc.
A planetary or a Type I civilization is a civilization that would be global, likely having a tolerant worldwide society that functions through science and reason, and is capable of consuming all of the incoming energy from its neighboring star, or about 1017 watts for Earth. A planetary civilization or global civilization is a civilization of Type I on the Kardashev scale. This type of civilization is likely to be reliant on renewable energy sources such as stellar power, as well as powerful non-renewable sources such as nuclear fusion. A Type I civilization's energy consumption level is roughly equivalent to the solar insolation on Earth (between 1016 and 1017watts) – around 3 orders of magnitude higher than that of contemporary humanity (around 2×1013 as of 2020). (Full article...)
A great power is a sovereign state that is recognized as having the ability and expertise to exert its influence on a global scale. Great powers characteristically possess military and economic strength, as well as diplomatic and soft power influence, which may cause middle or small powers to consider the great powers' opinions before taking actions of their own. International relations theorists have posited that great power status can be characterized into power capabilities, spatial aspects, and status dimensions.
While some nations are widely considered to be great powers, there is considerable debate on the exact criteria for great power status. Historically, great powers have been formally recognized as members of organizations such as the Congress of Vienna of 1814–1815 or the United Nations Security Council, of which the permanent members are China, France, Russia, the United Kingdom, and the United States. The United Nations Security Council, NATO Quint, the G7, BRICS, and the Contact Group have all been described as great power concerts. (Full article...)
Scholars generally acknowledge six cradles of civilization: Mesopotamia, Ancient Egypt, Ancient India and Ancient China are believed to be the earliest in Afro-Eurasia, while the Caral–Supe civilization of coastal Peru and the Olmec civilization of Mexico are believed to be the earliest in the Americas. All of the cradles of civilization depended upon agriculture for sustenance (except possibly Caral–Supe which may have depended initially on marine resources). All depended upon farmers producing an agricultural surplus to support the centralized government, political leaders, religious leaders, and public works of the urban centers of the early civilizations. (Full article...)
The planetary phase of civilization is a term created by the Global Scenario Group (GSG) to describe the contemporary era in which increasing global interdependence and risks are binding the world into a unitary socio-ecological system. Characteristics of this phase include economic globalization, biospheric destabilization, mass migration, new global institutions, the Internet, new forms of transboundary conflict, and shifts in culture and consciousness. (Full article...)
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Beginning in the 2020s, China has been described as an established superpower alongside the United States. A superpower is a sovereign state or supranational union that holds a dominant position characterized by the ability to exert influence and project power on a global scale. This is done through the combined means of economic, military, technological, political, and cultural strength as well as diplomatic and soft power influence. Traditionally, superpowers are preeminent among the great powers. While a great power state is capable of exerting its influence globally, superpowers are states so influential that no significant action can be taken by the global community without first considering the positions of the superpowers on the issue.
Leaders of the G20 countries and others present at the 2008 G20 Washington summit. Most members of the G20 are middle powers, while some are great powers.A middle power is a state that exerts significant influence in international relations at a level exceeding a small power but less than a great power. These countries often possess certain capabilities, such as strong economies, advanced technologies, and diplomatic influence, that allow them to have a voice in global affairs. Middle powers are typically seen as bridge-builders between larger powers, using their diplomatic skills to mediate conflicts and promote cooperation on international issues.
Middle powers play a crucial role in the international system by promoting multilateralism, cooperation, and peaceful resolution of conflicts. They are able to leverage their resources and diplomatic skills to advance their national interests while also contributing to global stability and prosperity. As such, middle powers are an important and often overlooked factor in the complex web of international relations. (Full article...)
Selected civilizations
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Indus Valley Civilisation at peak phase (2600–1900 BCE)
Anatomically modern humans are estimated to have first arrived on the Indian subcontinent between 73,000 and 55,000 years ago. The earliest known human remains in South Asia date to 30,000 years ago. Sedentariness began in South Asia around 7000 BCE; by 4500 BCE, settled life had spread, and gradually evolved into the Indus Valley Civilisation, one of three early cradles of civilisation in the Old World, which flourished between 2500 BCE and 1900 BCE in present-day Pakistan and north-western India. Early in the second millennium BCE, persistent drought caused the population of the Indus Valley to scatter from large urban centres to villages. Around 1800 - 1500 BCE the Indo-Aryan tribes moved into the north western region of India, modern day Punjab from Central Asia in several waves of migration. The Vedic Period of the Vedic people in northern India (1500–500 BCE) was marked by the composition of their extensive collections of hymns (Vedas). The social structure was loosely stratified via the varna system, incorporated into the highly evolved present-day Jāti system. The pastoral and nomadic Indo-Aryans spread from the Punjab into the Indo-Gangetic Plain. Around 600 BCE a second urbanization occurred resulting in a new interregional culture; then, smaller janapadas (realms) were consolidated into mahajanapadas (great states). This period saw the rise of new ascetic movements and religious concepts, including the rise of Jainism and Buddhism. The latter was synthesized with the preexisting religious cultures of South Asia, giving rise to Hinduism.
The civilizations of Classical Greece (Hellenic) and Roman Empire (Latin) as well as Ancient Israel (Hebraism) and early Christendom are considered seminal periods in Western history. From Ancient Greece sprang belief in democracy, and the pursuit of intellectual inquiry into such subjects as truth and beauty; from Rome came lessons in government administration, martial organization, engineering and law; and from Ancient Christianity with its ideals of the brotherhood of humanity. Strong cultural contributions also emerged from the pagan Germanic, Celtic, Finnic and Nordic peoples of pre-Christian Europe. Following the 5th-century "Fall of Rome", Europe entered the Middle Ages, during which period the Catholic Church filled the power vacuum left in the West by the fallen Roman Empire, while the Eastern Roman Empire (Byzantine Empire) endured for centuries. (Full article...)
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A River valley civilization is an agricultural civilization that is situated beside a river. Civilization develops from the river as it gives the inhabitants a reliable source of water for drinking and agriculture. The river also supports their livelihood through fishing, fertile soil from annual flooding, and ease of transportation. (Full article...)
The Minoan civilization developed from the local Neolithic culture around 3100BC, with complex urban settlements beginning around 2000BC. After c.1450BC, they came under the cultural and perhaps political domination of the mainland Mycenaean Greeks, forming a hybrid culture which lasted until around 1100BC. (Full article...)
Women in Carnival of Huejotzingo Women in Aztec civilization shared some equal opportunities. Aztec civilization saw the rise of a military culture that was closed off to women and made their role more prescribed to domestic and reproductive labor and less equal. The status of Aztec women in society was further altered in the 16th century, when Spanish conquest forced European norms onto the indigenous culture. However, many pre-Columbian norms survived and their legacy still remains. (Full article...)
The history of Maya civilization is divided into three principal periods: the Preclassic, Classic and Postclassic periods; these were preceded by the Archaic Period, which saw the first settled villages and early developments in agriculture. Modern scholars regard these periods as arbitrary divisions of chronology of the Maya civilization, rather than indicative of cultural evolution or decadence. Definitions of the start and end dates of period spans can vary by as much as a century, depending on the author. The Preclassic lasted from approximately 3000 BC to approximately 250 AD; this was followed by the Classic, from 250 AD to roughly 950 AD, then by the Postclassic, from 950 AD to the middle of the 16th century. Each period is further subdivided: (Full article...)
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Location of foreign lands for the Mesopotamians, including Elam, Magan, Dilmun, Marhashi and Meluhha. Magan (also Majan) was an ancient region in what is now modern day Oman and United Arab Emirates. It was referred to in Sumeriancuneiform texts of around 2300 BCE and existed until 550 BCE as a source of copper and diorite for Mesopotamia. As discussed by The Archeology Fund founded by Juris Zarins, "The Sumerian cities of southern Mesopotamia were closely linked to the Persian Gulf. Archaeologists and historians have linked sites in Saudi Arabia, Bahrain, and Qatar to the Sumerian geographical term of Dilmun. Oman, was most likely the Sumerian Magan". (Full article...)
The book is Kaplan's most notable work and has influenced a number of American Jewish thinkers. Kaplan's work centers around the concept that Judaism ought not to be defined as the religion of the Jews, but the sum of Jewish religion, culture, language, literature and social organization. (Full article...)
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The history of China spans several millennia across a wide geographical area. Each region now considered part of the Chinese world has experienced periods of unity, fracture, prosperity, and strife. Chinese civilization was traditionally thought to have first emerged in the Yellow River or Huang He valley, which along with the Yangtze basin constitutes the geographic core of the Chinese cultural sphere. However, current views have considered the origin to be a simultaneous duality of both the Yellow River and the Yangtze. China maintains a rich diversity of ethnic and linguistic people groups. The traditional lens for viewing Chinese history is the dynastic cycle: imperial dynasties rise and fall, and are ascribed certain achievements. This lens also tends to assume Chinese civilization can be traced as an unbroken thread many thousands of years into the past, making it one of the cradles of civilization. At various times, states representative of a dominant Chinese culture have directly controlled areas stretching as far west as the Tian Shan, the Tarim Basin, and the Himalayas, as far north as the Sayan Mountains, and as far south as the delta of the Red River.
Statuette of a Quimbaya cacique sitting on a stool, in Museum of the Americas (Madrid, Spain) The Quimbaya (/kɪmbaɪa/) were a small, ancient indigenous group in present-day Colombia noted for their gold work characterized by technical accuracy and detailed designs. The majority of the gold work is made in tumbaga alloy, with 30% copper, which colours the pieces. (Full article...)
Most ethnic groups of central Mexico in the post-classic period shared essential cultural traits of Mesoamerica. The culture of central Mexico includes maize cultivation, the social division between nobility (pipiltin) and commoners (macehualtin), a pantheon, and the calendric system. Particular to the Mexica of Tenochtitlan was the patron god Huitzilopochtli, twin pyramids, and the ceramic styles known as Aztec I to IV. The Mexica were late-comers to the Valley of Mexico, and founded the city-state of Tenochtitlan on unpromising islets in Lake Texcoco, later becoming the dominant power of the Aztec Triple Alliance or Aztec Empire which conquered other city-states throughout Mesoamerica. It originated in 1427 as an alliance between the city-states Tenochtitlan, Texcoco, and Tlacopan to defeat the Tepanec state of Azcapotzalco, which had previously dominated the Basin of Mexico. Soon Texcoco and Tlacopan were relegated to junior partnership in the alliance, with Tenochtitlan the dominant power. The empire extended its reach by a combination of trade and military conquest. It was never a true territorial empire controlling territory by large military garrisons in conquered provinces but rather dominated its client city-states primarily by installing friendly rulers in conquered territories, constructing marriage alliances between the ruling dynasties, and extending an imperial ideology to its client city-states. Client city-states paid taxes, not tribute to the Aztec emperor, the Huey Tlatoani, in an economic strategy limiting communication and trade between outlying polities, making them dependent on the imperial center for the acquisition of luxury goods. The political clout of the empire reached far south into Mesoamerica conquering polities as far south as Chiapas and Guatemala and spanning Mesoamerica from the Pacific to the Atlantic oceans. (Full article...)
Economy is conventionally defined as a function for production and distribution of goods and services by multiple agents within a society and/or geographical place An economy is hierarchical, made up of individuals that aggregate to make larger organizations such as governments and gives value to goods and services. The Maya economy had no universal form of trade exchange other than resources and services that could be provided among groups such as cacao beans and coppheological evidence to study the trade of perishable goods, it is noteworthy to explore the trade networks of artifacts and other luxury items that were likely transported together.
While subsistence agriculture played a central role in daily life, the Maya had a mechanism for economic exchange between settlements, which was capable of supporting specialists and a system of merchants through trade routes. Maya specialist Joanne Pillsbury states that "access to imported goods is perhaps the most recoverable aspect of prestige and leadership in ancient states." The power of Maya rulers not only depended on their ability to control resources, but also in managing the production and distribution of status goods as well as (non-local) commodities like salt. Furthermore, Maya laborers were subject to a labor tax to build palaces, temples and public works. A ruler successful in war was able to control more laborers and exact tribute on defeated enemies, further increasing their economic might. (Full article...)
Ancient Rome began as an Italic settlement, traditionally dated to 753 BC, beside the River Tiber in the Italian Peninsula. The settlement grew into the city and polity of Rome, and came to control its neighbours through a combination of treaties and military strength. It eventually controlled the Italian Peninsula, assimilating the Greek culture of southern Italy (Magna Graecia) and the Etruscan culture, and then became the dominant power in the Mediterranean region and parts of Europe. At its height it controlled the North African coast, Egypt, Southern Europe, and most of Western Europe, the Balkans, Crimea, and much of the Middle East, including Anatolia, the Levant, and parts of Mesopotamia and Arabia. That empire was among the largest empires in the ancient world, covering around 5 million square kilometres (1.9 million square miles) in AD 117, with an estimated 50 to 90 million inhabitants, roughly 20% of the world's population at the time. The Roman state evolved from an elective monarchy to a classical republic and then to an increasingly autocratic military dictatorship during the Empire. (Full article...)
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Maritime trade goods of the Maya The extensive trade networks of the Ancient Maya contributed largely to the success of their civilization spanning three millennia. Maya royal control and the wide distribution of foreign and domestic commodities for both population sustenance and social affluence are hallmarks of the Maya visible throughout much of the iconography found in the archaeological record. In particular, moderately long-distance trade of foreign commodities from the Caribbean and Gulf Coasts provided the larger inland Maya cities with the resources they needed to sustain settled population levels in the several thousands. Though the ruling class essentially controlled the trade economy, a middle merchant class supervised import and export from cities and trade ports. Not much is known of the Maya merchant class; however, merchants of royal lineage are sometimes represented in the iconography. Notably, a canoe paddle often accompanies the royal merchant depictions, signifying their association with marine resources.
Water lilies are also a recognizable feature of Maya iconography, appearing on ceramics and murals in landlocked cities like Palenque where the lilies cannot grow, further indicating the important political symbolism of water connections. The dugout style canoes of the Maya and other small watercraft are also represented in various codices, sometimes ferrying royal figures or deities. The rich tradition of maritime trade has continued into the modern era, exemplified by the resource exploitation of the coastal lagoons and cay locations along the Caribbean coast of Mexico, Belize, Guatemala, and Honduras. Eventually, the intensification of maritime trade reliance aided in the collapse of interior Maya power regimes, shifting political influence to coastal polities such as Uxmal and Chichen Itza in the Terminal Classic. A seaborne trade economy would continue to dominate the Maya civilization until the period of European contact. (Full article...)
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Late Postclassic Huastec temple at Castillo de Teayo
Surviving remains from the Huastec civilization include several large archaeological sites, a well-preserved temple, and a large amount of stone sculpture. By the Late Postclassic (c. AD 1200–1521), the Huastecs had developed metallurgy and were producing copper alloys. The Aztec Empire conquered the Huastec region around the 15th century, and probably demanded tribute payments. (Full article...)
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File:Bandera zapoteca.png The Zapotec civilization (Be'ena'a(Zapotec) "The People that came from the clouds"; c. 700 BC – AD 1521) is an indigenouspre-Columbian civilization that flourished in the Valley of Oaxaca in Mesoamerica. Archaeological evidence shows that their culture originated at least 2,500 years ago. The Zapotec archaeological site at the ancient city of Monte Albán has monumental buildings, ball courts, tombs and grave goods, including finely worked gold jewelry. Monte Albán was one of the first major cities in Mesoamerica. It was the center of a Zapotec state that dominated much of the territory which today is known as the Mexican state of Oaxaca. The Zapotec peoples are their modern descendants. (Full article...)
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The Inca Empire and its road system encompassed most of the Andean civilization. The Andean civilizations were South American complex societies of many indigenous people. They stretched down the spine of the Andes for 4,000 km (2,500 miles) from southern Colombia, to Ecuador and Peru, including the deserts of coastal Peru, to north Chile and northwest Argentina. Archaeologists believe that Andean civilizations first developed on the narrow coastal plain of the Pacific Ocean. The Caral or Norte Chico civilization of coastal Peru is the oldest known civilization in the Americas, dating back to 3500 BCE. Andean civilizations are one of at least five civilizations in the world deemed by scholars to be "pristine." The concept of a "pristine" civilization refers to a civilization that has developed independently of external influences and is not a derivative of other civilizations.
Despite the severe environmental challenges of high mountains and hyper-arid desert, the Andean civilizations domesticated a wide variety of crops, some of which, such as potatoes, peppers, peanuts, manioc, chocolate, and coca, became of worldwide importance. The Andean civilizations were noteworthy for monumental architecture, an extensive road system, textile weaving, and many unique characteristics of the societies they created. (Full article...)
Image 18China is one of the oldest civilizations in the world, originating in the 21st century BCE and continuing to the present day (Shang dynastyoracle bone writing pictured). (from Civilization)
Image 19Traditional Xia sites (red) and Erlitou sites (black) near the Yellow River (from Cradle of civilization)
Image 33The ancient Sumerians of Mesopotamia were the oldest civilization in the world, beginning about 4000 BCE, here depicted around 2500 BCE, showing the different social roles in the Sumerian society of Ur. (from Civilization)
Image 42Portrait of Alfraganus in the Compilatio astronomica, 1493. Islamic astronomers began just before the 9th century to collect and translate Indian, Persian and Greek astronomical texts, adding their own astronomy and enabling later, particularly European astronomy to build on. Symbolic for the post-classical period, a period of an increasing trans-regional literary culture, particularly in the sciences, spreading and building on methods of science. (from Human history)
Image 4413th-century French historiated initial with the three classes of medieval society: those who prayed (the clergy), those who fought (the knights), and those who worked (the peasantry)