Answer is B U-Boat activity
Answer:
The Allied Powers. World War II was fought between two major groups of nations. They became known as the Axis and Allied Powers. The major Allied Powers were Britain, France, Russia, and the United States. The Allies formed mostly as a defense against the attacks of the Axis Powers.
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Explanation:
After the War of 1812, Americans A "gained a renewed sense of pride in their country." There were no territorial gains in the war, however it solidified Americas ability to hold off the British, and therefore increased national pride.
The Kansas-Nebraska act allowed the people to vote if wanted to allow slavery in those states and this act served to appeal the Missouri Compromise. The Missouri Compromise prohibited slavery in the north. This act was also said to be a failure because it was made to end the conflict over slavery, but resulted in Kansas becoming a "battleground over slavery."