I believe it's the assassination of Franz-Ferdinand, correct me if I'm wrong.
C. President Roosevelt was a strong supporter of parks and nature
Over production of goods caused prices/stocks to fall after ww1 leading up to the great depression.
Containment was a United States policy using numerous strategies to prevent the spread of communism abroad. A component of the Cold War, this policy was a response to a series of moves by the Soviet Union to enlarge its communist sphere of influence in Eastern Europe, China, Korea, and Vietnam.
It is a transform plate boundary so the two plates grinding against each other cause tension and when the tension is released a earthquake occurs