Richard Nixon's diplomatic relations with China was mainly an attempt to B.) put political pressure on the Soviet Union.
Well, Germany was considered our enemy because of their submarines/U-boats were sinking American vessels. Germany also encouraged Mexico to attack the Americans through notes called the Zimmerman notes. Hopefully this helps.
The South was primarily composed of farms and farm workers, whereas the North was more industrial. The economies differed due to the differences in occupations and the amount of goods that were produced.
