Your answer is C, they feared large amounts of people fleeing to West Berlin, and created the wall to control the population better.
Britain and France, which should have come to the aid of the Chinese, were facing their own economic and military problems at the time, and did nothing. There was very little resistance.
Answer:
In early 1862, the Union and the Confederacy were locked in one of the most influential arms races of the Civil War. While their navies still relied on wooden ships, both sides had gambled on building revolutionary “ironclad” vessels that boasted steam engines, hulking cannons and armor plating protecting their hulls. In Brooklyn, Federal forces were prepping the iron vessel USS Monitor. At Gasport Navy Yard in Portsmouth, Virginia, the rebels were finishing their own metal colossus, CSS Virginia.
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Chester A. Arthur was the 21st president
