D. Civil war
B. They represent the 13 original colonies
B. Communism
Answer:
They needed a way to connect their large, spread-out empire.
Hope this is right!
west Germany was under control of America and England after the war and east Germany was under control of Russia. Many people in east Germany disagreed with communist Russia's system and they left to go to West Germany. Russia put up a wall, later named the Berlin Wall, to prevent this. it was heavily guarded and many people died attempting to escape.
To sum it down Congress' challenge was whether to allow slavery in new territories, it was so because the southern states had helped drastically in the Mexican-American war and from which they believed they would receive a reward for, Congress ended up splitting have of the new territories into slave states and non slave states.