Ответ:
1) Because the bricks were not strong enough
2) In the 1885s
3) Invention of the elevator in 1880s engineers developed a new building technique using steel
4) Because it is decorate every city
5) The word " skyscraper" comes from the new sailors gave to the tallest mast on a ship
6) Empire State Building grew almost one floor higher every day
7) Shops , offices , apartments , hotel
Объяснение: