1. why is the acquisition of the northwest territory in 1789 considered a turning point in american history? (ushc-2.1)
a. it served as the primary cause of the mexican-american war in 1848.
b. it angered both great britain and france and resulted in the war of 1812.
c. state governments claimed sole authority over the expansion of slavery in new territories.

d. the national government passed a law that banned the expansion of slavery for the first time.

Option A is the right answer.

Explanation:

The main impact of the acquisition of northwestern territory is that it served as a main cause of American Mexican war. America’s manifest destiny was achieved and rewarded by the war that was waged between America and Mexico.

United States desire to acquire the entire west, urged them to enter the territories of Texas which belonged to Mexico. This hostile invasion created apprehensions in Mexico and they feared of losing Texas.

This American Mexican war created border dispute between America and Mexico which resulted in cession of vast lands. It was an unreasonable conflict based on the Belief that America was provided with Divine right to expand in order to attain glory in the world (Manifest destiny).

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after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.