American Society of Civil Engineers — Qhapaq Nan

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Technology Engineering

The Brooklyn Bridge opens in New York City

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Technology Engineering

America's first roller coaster opened at Coney Island

45 sec read

Technology Energy

The world's first hydroelectric central station switched on

50 sec read

History Empires & Civilizations

The Inca ran a 24,000-mile road empire without writing or the wheel

40 sec read