Answer: Should be:
The major industrial cities became overcrowded as workers from rural areas moved there.
and
Because of the steady increase in food production, the population nearly doubled between 1800 and 1850.
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Answer: The United States received the Philippines and the islands of Guam and Puerto Rico. Cuba became independent, and Spain was awarded $20 million dollars for its losses. The treaty prompted a heated debate in the United States. The major effects that stemmed from the war were that Cuba gained their independence from Spain, the United States gained Guam, Puerto Rico, and the Philippines, and the Spanish Empire collapsed. Cuba had been fighting for its independence from Spain for many years before the start of the Spanish-American War.
During the 1800 there was a big economic boom in the northern states. However, the south also had cotton as a leading cash crop during the 1800s.
I he best answer is 3 I am 87 percent sure
The answer is A: to defend its territory and become an independent nation