The U.S. justified its involvement in the Vietnam War by stating that they were fighting against communism. At the time, the Soviet Union was seen as a huge threat and there was a rivalry between the two nations.
Answer:
Kennedy believed we should understand that freedom begins with our right to think, and that we should protect this right against a government that would try to limit our thoughts for its own purposes
The correct answer is : Austria!
This was called the "Austro-Prussian war".
Before this war, Austria had the leading role among the German-speaking states, and after this war, this role shifted more to Prussia (of which Bismark was the Minister President).
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Im not 100% sure but that should be the year that Texas joined the nation or the united states.