Answer:
The United States believed that the economic aid provided by the Marshall Plan would help contain the spread of Communism.
The Austro-Hungarian Empire blamed the entire Serbian country for the death of the Archduke instead of the terrorist group responsible. The Bosnians were close to the Serbs, and both countries took great offense to the blame.
There is not a specific antonym for diaspora, but the opposite of a diaspora would be the regrouping of a community or the coming together of a community. It could also be a renewal of a specific cultural group or ethnicity coming back together in a sort of revival of their culture.
Arkansas, Colorado,Louisiana,Montana,New Mexico, North Dakota,Oklahoma,South Dakota, Texas, Utah and Wyoming..
Hope that helps
the answer is C, the OPEC oil embargo :)