Great wall of china dating
From an ancient Sumerian bulwark to the Berlin Wall, here are seven of history’s most influential manmade barriers.The world’s earliest known civilization was also one of the first to build a defensive wall. C., the ancient Sumerian rulers Shulgi and Shu-Sin constructed a massive fortified barrier to keep out the Amorites, a group of nomadic tribesmen who had been making incursions into Mesopotamia.This “Amorite Wall” is believed to have stretched for over a hundred miles between the Tigris and Euphrates Rivers in what is now Iraq.It was likely the first extensive rampart not built around a city, but it only succeeded in fending off the Sumerians’ enemies for a few years.It’s been said that good fences make good neighbors, and it seems that many of history’s most famous civilizations would agree.Dating back to the ancient world, governments and militaries have constructed sprawling defensive walls to keep hostile enemies at bay, define their national borders and even prevent their own citizens from fleeing—often with decidedly mixed results.
More than 100 people were eventually killed while trying to escape through the maze of 12-foot walls, guard towers and electrified fences.
The Mongol leader Altan Khan famously bypassed the wall and raided Beijing in 1550, and the Manchus later broke through in 1644 and brought about the fall of the Ming Dynasty.
The Byzantine metropolis of Constantinople (modern day Istanbul) flourished for over a millennium thanks in part to the strength of its defensive walls.
More than 14 miles of barricades surrounded the city, but the most famous were the Theodosian Walls, which blocked armies from advancing from the mainland.
They included a moat, a 27-foot outer wall and a massive inner wall that was 40 feet tall and 15 feet thick.