Answer:
The population of United states will be low.
Explanation:
The railroads sought immigrants for its labor because labors are needed for the building of railroads. The immigrants labor were good for this work due to taking low wage for the work as compared to local workers who demanded more money for the work because the work is very hard. If these immigrants did not come for the work of railroads so the population of United States of America is lower than the present population of United States.
Answer: The Huang He River and the Yangtze River.
The Grand Canal is the longest and oldest canal or artificial river in the world. The oldest parts of the canal date back to the 5th century BC, but it was significantly rebuilt between 1271 and 1633. The canal starts at Beijing, passes through Tianjin, Hebei, Shandong, Jiangsu and Zhejiang to the city of Hangzhou. The canal links the Huang He and the Yangtze rivers.
Answer:
George Washington (1732-99) was commander in chief of the Continental Army during the American Revolutionary War (1775-83) and served two terms as the first U.S. president, from 1789 to 1797.
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The great depression in 1929 is widely accredited to have been started by the Wall street crash, the drastic and fast fall in stock prices on the US stock market.