Skyscrapers seem like a very new idea but in fact the first one built in 184 in Chicago. It had nine floors.
as Skyscrapers have many floors their owners can get more rent so they are built where land is very expensive as in new york. In 1931 the empire state building in new york was finished. It was the tallest building in the world Until 1970. With 102 stories.
then the world trade center with 110 floors was built again in new york. After that in 1974 the sear tower was built in Chicago. It also has 110 floors but it is higher than the world trade center. the tallest building in Bangkok-baiyoke it is only 90 stories high.
sometimes too many Skyscrapers are built so there are not enough people to rent all their floors. This has happened in Bangkok in recent years. Banks wasted a lot of money on loans to build these beautiful empty buildings.