Ostpolitik was a German plan to "<span>b. improve relations with Eastern bloc nations," since this was during the Cold War, and it had become clear that such division was unhealthy from a social and economic standpoint. </span>
The Manhattan Project<span> was a secret military </span>project<span> created in 1942 to produce the first US nuclear weapon. Fears that Nazi Germany would build and use a nuclear weapon during World War II triggered the start of the </span>Manhattan Project<span>, which was originally based in </span>Manhattan<span>, New York.
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The Progressive Movement was characterized by efforts to better American policy through reforms, expanded democracy, Science, and Government regulation. (D.)