Answer: Qin Dynasty
Explanation:
The Great Wall of China's history began in the Spring and Autumn Period (770–476 BC), was first completed in the Qin Dynasty (221–206 BC), and was last rebuilt as a defense in the Ming Dynasty (1368–1644).
<span>Alexander Palmer justified the Palmer Raids of 1919 and 1920 when Palmer warned of an imminent communist takeover.
A raid done on the Union of Russian Workers headquarters on November 25, 1919 uncovered a bombed factory hidden behind a false wall. This discovery lend credence to the threat of communist takeover.
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Electricity impacted industries because the businesses and factories could do things faster. Factories had machines that wouldn't use gas and would run better and not give off fumes
