D. Obama became more popular later on in his presidency.
Thats the answer to your answer
Eastern Europe fell into authoritarian rule, because of US unwillingness and general fatigue of the war to start Operation Unthinkable- Churchill’s plan to liberate Eastern Europe from Soviet influence. EAEuropean countries were forced to accept authoritarian regimes supported by the large amounts of Red Army units in their countries in 1945.
We do not have the main resource to answer the question which is the book. Im sorry but your question is un answerable
The constitutional principle derived from the Supremacy Clause is federal preemption. =^.^=
