Answer: The war—in which U.S. forces were consistently victorious—resulted in the United States' acquisition of more than 500,000 square miles (1,300,000 square km) of Mexican territory extending westward from the Rio Grande to the Pacific Ocean.
Explanation:
Answer:
He claimed the Frontier Thesis or Turner Thesis and it is is the argument advanced by historian Frederick Jackson Turner in 1893 that American democracy was formed by the American frontier.
The United Nations, because after World War ll the allies created the United Nations to keep international cooperation and diplomacy in an attempt to prevent a third world war
Instituting the Reign of Terror.
