it was Electricity
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
Subways travel on tracks, which are typically made of steel rails laid on a bed of gravel or concrete. These tracks are designed to support the weight of the subway trains and provide a smooth path for them to run on. Subways often operate underground, but they can also run on elevated tracks or at ground level in some areas. The trains are powered by electricity, usually supplied through overhead lines or an electrified third rail.
Steel made it possible to build Skyscrapers. Answer "construction of skyscrapers"
very possible
I think it was subways ,cars and street trolleys because they cheaply and quickly carried people in the cities to and fro their work.
Yes you can bend high carbon steel.
No , being an acid it will react with steel .
Steel
Steel.
There are several places where someone can get a stainless steel pendant. Some possible options are ABC Steel Jewelry, Julong Steel Jewelry and 135 Steel Jewelry.
steel
skyscrapers