The Berlin Wall, which divided East and West Germany from 1961 to 1989, was a powerful symbol of the Cold War. View More
Ancient Egyptian civilization left a legacy of architectural and structural wonders for contemporary engineers to ponder. View More
The Middle Ages (roughly 500 to 1500 c.e.) were a period that introduced such new inventions as spinning wheels and mechanical clocks. View More
The Meiji Restoration marked the return of imperial governance to Japan in 1868 after a period of military rule. View More
The Panama Canal made shipping more efficient by obviating long journeys around the southern tip of South America. View More
