1) because the bricks were not strong enough
2) in 1930-1931
3) the invention of the elevator made it possible to climb faster and build much faster.
4) because there was not enough space in the cities and there was relocation
5) because it was so named by the sailors as the highest place on the ship mast
6) on the building every day
7) there you can find shops, offices, apartments and hotels
Объяснение:
в ответе
