Early prehistory including Pliocene prehistory, early Pleistocene prehistory, early mid Pleistocene prehistory, mid Pleistocene prehistory, and late mid Pliestocene prehistory can be connected. Middle prehistory including the 5th decamillennium BP, 4th decamillennium BP, 3rd decamillennium BP, and 2nd decamillennium BP can be connected. Late prehistory including the 8th millennium BC, 7th millennium BC, 6th millennium BC, 5th millennium BC, and 4th millennium BC can be connected.
The early 3rd millennium BC including the 30th century BC, 29th century BC, 28th century BC, 27th century BC, and 26th century BC can be connected. The late 3rd millennium BC including the 25th century BC, 24th century BC, 23rd century BC, 22nd century BC, and 21st century BC can be connected. The early 2nd millennium BC including the 20th century BC, 19th century BC, 18th century BC, 17th century BC, and 16th century BC can be connected. The late 2nd millennium BC including the 15th century BC, 14th century BC, 13th century BC, 12th century BC, and 11th century BC can be connected. The early 1st millennium BC including the 10th century BC, 9th century BC, 8th century BC, 7th century BC, and 6th century BC can be connected.
Early classical history including the 5th century BC, 4th century BC, 3rd century BC, 2nd century BC, and 1st century BC can be connected. Late classical history including the 1st century CE, 2nd century CE, 3rd century CE, 4th century CE, and 5th century CE can be connected. Early medieval history including the 6th century CE, 7th century CE, 8th century CE, 9th century CE, and 10th century CE can be connected. Late medieval history including the 11th century CE, 12th century CE, 13th century CE, 14th century CE, and 15th century CE can be connected.
The 16th century including the early 16th century, early mid 16th century, mid 16th century, late mid 16th century, and late 16th century can be connected. The 17th century including the early 17th century, early mid 17th century, mid 17th century, late mid 17th century, and late 17th century can be connected. The 18th century including the early 18th century, early mid 18th century, mid 18th century, late mid 18th century, and late 18th century can be connected. The 19th century including the early 19th century, early mid 19th century, mid 19th century, late mid 19th century, and late 19th century can be connected.
The 20th century including the early 20th century, and early mid 20th century can be connected. The mid 20th century including the early 1940s, late 1940s, early 1950s, and late 1950s can be connected. The late mid 20th century including the early 1960s, late 1960s, early 1970s, and late 1970s can be connected. The late 20th century including the early 1980s, late 1980s, early 1990s, and late 1990s can be connected.
The early 21st century including the early 2000s, late 2000s, ealy 2010s, and late 2010s can be connected.
The early 2000s including 2001, 2002, 2003, 2004, and 2005 can be connected. The late 2000s including 2006, 2007, 2008, 2009, and 2010 can be connected. The early 2010s including 2011, 2012, 2013, 2015, and 2015 can be connected.
The future including the near future, middle future, and far future can be connected.
Peoples of the world including major groups of Western Civilization, Asiatic peoples, African peoples, and American Indian peoples can be connected.
Nations such as Philippines, Vietnam, Ethiopia, Egypt, Germany, Iran, Turkey, Congo DR, Thailand, France, United Kingdom, Italy, South Africa, South Korea, Burma, Colombia, Spain, Ukraine, Tanzania, Argentina, Kenya, Poland, Algeria, Canada, Iraq, Uganda, Morocco, Sudan, Peru, Uzbekistan, Malaysia, Venezuela, Saudi Arabia, Nepal, Yemen, Afghanistan, Ghana, North Korea, Mozambique, Taiwan, Australia, Syria, Côte d'Ivoire, Madagascar, Sri Lanka, Angola, Cameroon, Romania, Chile, Netherlands, Kazakhstan, Niger, Burkina Faso, Guatemala, Mali can be connected.
Western Civilization including Mexico can be connected. Anglic peoples such as those of the United States can be connected. Latin peoples such as those of Brazil can be connected. Northeast European peoples such as those of Russia can be connected.
Asiatic peoples such as those of Japan can be connected. South Asian peoples such as those of Bangladesh can be connected. India can be connected. Pakistan can be connected. Oriental peoples such as those of China can be connected. Southeast Asian and Oceanic peoples such as those of Indonesia can be connected.
American Indian peoples such as those of Mexico can be connected. Middle American Indian peoples such as those of the southwestern United States can be connected. South American Indian peoples such as those of Brazil can be connected. North American Indian peoples such as those of the United States can be connected.
Communities such as Tokyo, Seoul, Mexico City, New York City, Mumbai, Jakarta, Sao Paulo, Delhi, Shanghai, Manila, Karachi, Cairo, Beijing, Osaka, Canton, Moscow, Los Angeles, Calcutta, Dacca, Buenos Aires, Istanbul, Rio de Janeiro, Shenzhen, Lagos, Paris, Nagoya, Lima, Chicago, Kinshasa, Tianjin can be connected.
Other mechanics including other social structure can be connected. Social change including social change factors, and social change processes can be connected. Particular changes and movements including stone age developments, the agricultural revolution, agrarian developments, and the industrial revolution can be connected. Social types including industrial societies, agrarian societies, horticultural societies, and hunting and gathering societies can be connected.
Institutions including economics, education, and family can be connected. Religion including particular religions of the world, religious organization, religious practice, and religious belief can be connected. Government including particular governments, government activity, government structure, and law can be connected. Economics including economic systems, industries, and economic activity can be connected.
Culture including behavioral culture, conceptual culture, and material culture can be connected. Anthropology including particular groups, human geography, human ecology, physical anthropology, demography, and social foundations can be connected. Personal studies including biography, psychology, and the human body can be connected. Science including astronomy, biology, earth science, chemistry, and physics can be connected.
Created 9 Apr 2013 Last updated 7 Oct 2017