A military action the added territory in the United States in 1848 was the Treaty of Guadalupe Hidalgo. It ended the Mexican-American war and added the territories California, Arizona, Colorado, New Mexico, Nevada, Utah, and Wyoming.
The answer is A because it is just the answer
The 18th Century is considered the epitome of this age.
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Europeans hoped it would create new markets that would supply them with raw materials and provide customers for finished goods