I think it is a but I could be wrong
From my previously gained knowledge from my Japanese classes, the answer would be D. Because Japan didn't really that much of a population boom until the 20th century because they whole island was not yet inhabited. They didn't really feel like spreading Buddhism because it didn't become a popular religion until the 20th century, and the US had nothing to do with Japans wanting of more land. They gained land mainly from China, so the long-standing rivalry between China and Japan would be the best answer.
Answer:
C. Asked Soviet Union for help
Explanation:
After JFK set up the quarentine to prevent supplies to be sent to Cuba, Fidel Castro asked asked Nikita Khrushchev the leader of the CCCP (Soviet Union) for advice or help
The French concentrated in exploring Canada because they already had forts in it in Quebec and in other parts of Canada, also there wasn't too much fighting over Canada except for the British so they decided to explore Canada.
In my perspective I think that Sparta was rather xenophobic, while Athens were open to foreigners.
Hope this answer your question sir! Mark me the Brainlest :)<span />