Streetcars and subways are made possible by public funding. Sometimes the funding is more local and sometimes it is national.
it was Electricity
I believe it was the internal-combustion engines.
there were important advances in transportation. streetcars, subways, automobiles, and airplanes were developed.
You have 2 different questions. Streetcars were electric busses which travelled on rail tracks in streets. Most have disappeared. They had to stop in the middle of the street which meant that passengers needed to get out in the street which made it dangerous. Many people were killed by passing cars. Street cars still exist in New Orleans, Louisiana, in the United States, where they can operate on streets separate from automobiles. Subways exist in a number of places. More are being built. They are expensive to build or even more would be built.
There were 4 main ways. Elevators, lights, streetcars, and subways. They were all invented by Thomas Edison and Nikola Tesla.
Toronto has an excellent public transit system, which includes subways, streetcars and buses. There is also a very good regional commuter bus and train service operated by the Government of Ontario.
The first streetcars in Canada were horse-drawn.
Steam powered the first reliable streetcars.
On Streetcars
Streetcars, Inc makes Streetcar shoes.
The Subways was created in 2003.
The automobile increased the need for roads and bridges, and raised the demand for steel and rubber. The use of the automobile spurred the growth of suburbs, which had initially been made possible by trains and subways. A+ all answers are correct