Some early skyscrapers have a steel frame that enables the construction of load-bearing walls taller than of those made of reinforced concrete. Modern skyscrapers' walls are not load-bearing, and most skyscrapers are characterized by large surface areas of windows made possible by steel frames and curtain walls.The development of skyscrapers came as a result of the coincidence of several technological and social developments.
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: The North American Southwest homes were made out of adobe and The Arctic homes were made out of Igloos that's how they were different. They both have homes that's what similar between the two of them.
Dahil ang latitud ay ang isang distansyang angular na natutukoy sa pamamagitan ng dalawang parallel patungo sa hilaga o timog ng ekwador. at ang longhitud ay ang sinisimbolo ng Griyegong titik na lambda, at ang heograpikong koordinado na karaniwang ginagamit sa kartograpiya at pandaigdigang paglalayag para sa silangan-kanlurang pagsukat.
