Completed the following sentence: In 1852 Elisha Otis invented the safety elevator, which automatically comes to a halt if the hoisting rope breaks. <unk> <unk> <unk> <unk>
1853 New York World's Fair, the elevator industry established credibility. The Otis Elevator Company was founded in Yonkers, New York, in 1853 by Elisha Otis. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ During the American Civil War, their elevators were in high demand due to the shipment of war materials.<unk> During the American Civil War, their elevators were in high demand due to the shipment of war materials.<unk> During the American Civil War, their elevators were in high demand due to the shipment of war materials. ••••••••••••••••••••••••••••• ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️