domingo, 22 de abril de 2018

How the world's first subway system was built

The London Underground (also known as the Underground, or by its nickname the Tube) is a public rapid transit system serving London and some parts of the adjacent counties of Buckinghamshire, Essex and Hertfordshire in the United Kingdom.

The Underground has its origins in the Metropolitan Railway, the world's first underground railway. Opened in 1863, it is now part of the Circle, Hammersmith & City and Metropolitan lines; the first line to operate underground electric traction trains, the City & South London Railway in 1890, is now part of the Northern line. The network has expanded to 11 lines, that collectively hadle approximately 4,8 million passengers a day. (Source Wikipedia)

This lesson by TED-Ed teaches how the London subway system was first developed.

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