The major cause of shifts in political allegiance during this time came from the Great Depression, which required strong government intervention to correct the issue. These interventions became commonly ascociated with the Democratic Party, thanks to FDR.
He spoke out against the soviet union's refusal to allow Jews to immigrate to Israel.
The Good Neighbor policy was a foreign policy that US President Franklin Roosevelt adopted regarding the affairs of Latin America. Basically it was a non interference and non intervention principle that the US adopted regarding the political and economical affairs to Latin America to show that they were being a "good neighbor." The Good Neighbor allowed the US to build strong ties to several countries in Latin America, however it was essentially dissolves when the Cold War began in 1945 and the US felt a stronger need to protect its close allies.
I know this is old, but the correct answer is D. The answer is part of the jury deliberation.
Impending war between Mexico and the US.
The American settlers in California resented the Mexican government and were fearful of oppressive reforms with rumors of a war between Mexico and the US. To secure their place, troops incited a rebellion and California declared their independence.
