Origin of Social Classes

History of Human Migration

History of Transportation

Origin of Slavery

History of Video Games

History of the Thirty Years’ War

Origin of Cities

Origin of Painting

Origin of Architecture

History of Economic Crises

Origin of Democracy

Origin of Photography

History of the Indian Rebellion of 1857

Origin of Language

History of the Spanish Civil War

Origin of Technology

History of Mormons

History of the Industrial Revolution

Origin of the Bronze Age