The answer is B.
“Finally, Union gunboats and troop transport boats ran the batteries at Vicksburg and met up with Grant's men who had marched overland in Louisiana. On April 29 and April 30, 1863, Grant's army crossed the Mississippi and landed at Bruinsburg, Mississippi. An elaborate series of demonstrations and diversions fooled the Confederates and the landings occurred without opposition. Over the next 17 days, Grant maneuvered his army inland and won five battles, captured the state capital of Jackson, Mississippi, and assaulted and laid siege to Vicksburg.”
The correct answer is D) Compromise.
Congress was constantly trying to find ways to "solve" the issue of slavery in American society. It first started with the Missouri Compromise. This established that the institution of slavery would not exist north of the 36'30 for any new states added during the era of westward expansion. However, this would not last forever as the adding of California after the Mexican-American War became a problem. This is because the 36'30 cut the state into two parts and the US did not want a half free half slave state.
This resulted in the creation of the Compromise of 1850. However, this law would not solve the issue of slavery. Rather, it just pushed the problem further down the road.
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