How did louis sullivan and william jenney change the face of american cities in the late 1800s

They designed and built some of the early skyscrapers.

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They designed the first skyscrapers and used new materials and technics for construction.

Explanation:

They were both parts of the movement known as the Chicago school. With the used of new materials as steel-frame, they could build higher constructions and developed the first skyscrapers.

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fair labor standards act

explanation:

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