Steel.
there were important advances in transportation. streetcars, subways, automobiles, and airplanes were developed.
Availability of steel for the framing, and elevators to move people and goods vertically.
umm im not sure sorry
true
Steel.
yes
One technology that made skyscrapers possible would be the elevator. The other, I suspect is structural steel.
The transit level was invented by William J. Young in the mid-1800s. He developed the device to accurately measure angles and elevations for surveying and engineering purposes.
The earliest skyscrapers were the result of design breakthroughs and industrial technology in the late-1800s. These tall buildings were made of fire-proofed iron and set on deep foundations.
there were important advances in transportation. streetcars, subways, automobiles, and airplanes were developed.
Availability of steel for the framing, and elevators to move people and goods vertically.
1800s
i do not now
umm im not sure sorry
true
Human society and its impact on the biosphere were transformed by the Industrial Revolution, which added machines and factories to civilization during the 1800s.