Final answer:
Subway and bus are two means of urban transport introduced in modern cities.
Step-by-step explanation:
In modern cities, two means of urban transport that were introduced include the subway and the bus. The subway, also known as the metro or underground, is an underground railway system that allows people to travel quickly and efficiently across the city. Buses, on the other hand, are road vehicles that transport passengers along a specific route, stopping at designated bus stops to pick up and drop off passengers.
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