They were still segregated while they were in the U.S military. They even lived on a separate field even though they were fighting the same battles as the others.
Unrestricted submarine warfare, which became prominent in World War I, meant that submarines could sink any time of vessel at any time without warning. Before this, they had to surface first and place crews on lifeboats.
The Enlightenment played an important role in the French Revolution. The Enlightenment transformed the monarchy, creating the idea of a republic. The bourgeoisie liked the ideas of John Locke. He said no king should have absolute power and liked the idea of a constitutional monarchy.
Answer:
B - The sovereignty of all the states in the union was weakened.
