These two technologies were the development of a safe elevator and the method of building using a grid of steel beams.
In 1853, an American inventor called Elisha Graves Otis developed a safety device that kept elevators from falling should a cable break. This new development had an enormous impact on public confidence. Later in the century, the change to an electric motor made the elevator a practical solution to the problem of getting up and down tall buildings.
In Chicago during the 1880s, lack of space for building became a problem due to a high rate of development, and the only alternative was to build upward. Construction techniques had to change and so a new method of building was developed that used a grid of steel beams and columns that were strong enough to support any stresses or forces a building may experience. With this new building method, the skyscraper was born.
American colonists responded to the Sugar Act and the Currency Act with protest. In Massachusetts, participants in a town meeting cried out against taxation
and Japan has latest evolving technology if that helps...Japan's technology is the most innovative and complex tech designed which is far above other striving pieces
