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Antisthenes (c. 445-365 BCE) was a Greek philosopher who founded the Cynic School of Athens. He was a follower of Socrates and appears in Plato's Phaedo as one of those present at Socrates' death...

Dr. Josefa Steinhauer explains the history of the first human vaccine and the early days of the anti-vaxx movement. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC...

The Inca civilization flourished in ancient Peru between c. 1400 and 1533 CE. The Inca Empire eventually extended across western South America from Quito in the north to Santiago in the south. It was the largest empire ever seen...

The Thirty Years’ War (1618-1648) was the last major European conflict informed by religious divisions and one of the most devastating in European history resulting in a death toll of approximately 8 million. Beginning as a local...

Empress Wu Zetian (Empress Consort Wu, Wu Hou, Wu Mei Niang, Mei-Niang, and Wu Zhao, l. 624-705 CE, r. 690-704 CE) was the only female emperor of Imperial China. She reigned during the Tang Dynasty (618-907 CE) and was one of the most...

The New England Colonies were the settlements established by English religious dissenters along the coast of the north-east of North America between 1620-1640 CE. The original colonies were: - Plymouth Colony (1620 CE...

Heka is the god of magic and medicine in ancient Egypt and is also the personification of magic itself. He is probably the most important god in Egyptian mythology but is often overlooked because his presence was so pervasive as to make...

The American Revolutionary War (1775-1783), or the American War of Independence, was a conflict between Great Britain and its 13 North American colonies, who declared independence as the United States of America. Initially...

Sir Francis Drake (c. 1540-1596 CE) was an English mariner, privateer and explorer who in 1588 CE helped defeat the Spanish Armada of Philip II of Spain (r. 1556-1598 CE) which attempted to invade the kingdom of Elizabeth I of England...

The Seventh Crusade (1248-1254 CE) was led by the French king Louis IX (r. 1226-1270 CE) who intended to conquer Egypt and take over Jerusalem, both then controlled by the Muslim Ayyubid Dynasty. Despite the initial success of...