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a competition between nations for superiority in the development and accumulation of weapons, especially between the US and the former Soviet Union during the Cold War.
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To come to peace you would have to change the mind of almost every powerful person in the countries at war. It would be easier to end the war because it is easier to use force than to use opinion.
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A tariff is tax on certain items imported into the US or other countrys
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Because president abraham lincoln abolished slavery. He didn't want slavery to exist anymore because he was poor growing up and saw what happend with the slaves and even met Sojourner Truth.
Constantine moved the capital of the Roman Empire because of how dangerous it was to live in.