The world’s first underground railway opened in which city and year?

Q: The world’s first underground railway opened in which city and year?

London — January 10, 1863.. Steam-powered trains ran through the tunnels. Ventilation was so bad that passengers routinely emerged coughing black smoke. Progress had lungs.

Question

Accepted Answer

London — January 10, 1863. — Steam-powered trains ran through the tunnels. Ventilation was so bad that passengers routinely emerged coughing black smoke. Progress had lungs.