Question

Which is the biggest underground railway network?​

Answer 1

Explanation:

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The world's longest metro and subway systems

•Seoul Subway, South Korea. Seoul subway serving the Seoul Metropolitan Area is the longest subway system in the world. ...

•Beijing Subway, China. ...

•New York Subway, United States.

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Answer 2

Answer:

Answer:

The Beijing Subway is the world's busiest and longest metro system, while the New York City Subway has the greatest number of stations. The country with the most metro systems is China, with 39 operational.

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