Acontinental rift is a zone where

divergent margins develop within continents

convergent margins cause mantle upwelling within a continent

the continental crust is getting thicker because of tectonic activity

The answer is A. A continental rift zone is where the plates pull away from each other.

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The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey