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:
I believe the answer is A. Korea
Explanation:
In the Korean War (during) there was no Korea, during the War it was divided in North and South Korea, so it has to be A.
Whatever they said I suppose if it works
Answer:
Political leads early money by Thor good work and from the speech of the development which they promise
