It was a good one in fact, They were good allies in WWII despite one being capitalist (USA) and the other communist (USSR). Their relationships weakened after WWII.
Stalin has established a dictatorship
I believe it was a trial upon Ethel and Julius Rosenberg. The couple were accused of selling nuclear secrets to the Russians, but treason could not be held since the U.S was not at war with the Soviet Union.
Answer:
The French established a colony in parts of Canada and brought their language with them.
A historian using the thinking skill of primary source analysis might try to "get in the mindset" of the writer or speaker of the source in question, in order to gain more insight into their life and environment.