It was the refinement of the Bessemer process, first used in the United States in the 1860s, that allowed for the major advance in skyscraper construction. As steel is stronger and lighter in weight than iron, the use of a steel frame made possible the construction of truly tall buildings.
Answer: Ottoman Empire, empire created by Turkish tribes in Anatolia (Asia Minor) that grew to be one of the most powerful states in the world during the 15th and 16th centuries.
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Marxism gained only limited support among the British working class
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War of the Austrian Succession. the war (1740–48) in which Austria, England, and the Netherlands contradicted Prussia, France, and Spain over the choice of rulers for regions inside the Austrian Empire.
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Generally speaking, in towns such as New York and Cleveland and Chicago blacks were heavily discriminated against and forced to live in segregated and discriminatory housing projects.