The constitutional amendment is amendment 15
Answer:
A. The states' rights argument.
Explanation:
The controversy over the power, whether it was rightly belonged to the States in the 1820s and 1830s, was heated up again by the contentious question of whether slavery would be tolerated in the new territories that emerged as the nation expanded to the West. As the North and the South diverged more and more, their interests and expectations have divided.
The russians practiced communism where as the west (usa,britain,france) were anti communist. the us were capitalists , thus is would make sense that the ussr and the usa would clash eventually despite their pasts of helping eachother out. once russia clashed with the west it gave way to the cold war
