1)However it was difficult to build very tall buildings because thebricks were not strong enough.2)in 1885 the world`s first skyscraper a ten-storey office building opened in Chicago .3)Then in 1852 Elisha Oits invented the elevator and in the 1880s engineers developed a new buildings technique using steel.4)In big cities such as Chicago and New York that needed living space for families and offices for businesses skyscrapers were the perfect solution.5)In fact the word skyscraper comes from the the name sailors gave to the tallest mast on a ship 6)Between 1930and 1931 the Empire State Building grew almost one floor higher every day.The 3.400 men who worked on it finished it in 14 months 7)Astana the capital of Kazakhstan also has its share of skyscrapers .The triumph of Astana is one of the most impressive.It was completed in 2006 and has 39 floors with shops offices apartments and a hotel.
