The German and the name of the guy is Fritz Haber.
Answer:
Americans, beginning the 19th century, had an idea of "Manifest Destiny" in which they thought they were destined to expand the US to the west coast
The California territory is located near the sea. Acquiring this territory would provide America with:
- safe military defense bordered by the sea
- enough space to built ports so we can make a trading relationship with other countries
We both have a senate that speaks for there people
Basically, if Dredd Scott would be free,or still be his masters property.
Immediate conflicts:
... The USA had atomic weapons and the USSR did not. (The US would not share that technology with the Soviets.)
... The USSR did not assure that free and fair elections took place in Eastern Europe -- it saw to it that Soviet-aligned governments were installed there.
... Tensions over the East Germany / West Germany and East Berlin / West Berlin division of territory.
Deeper causes:
The USA was committed to capitalism and democratic institutions of government.
The USSR was committed to communism and imposed authoritarian government.
The Cold War was mostly a tension between these worldviews.