I'll first explain what the non-aggression pact was. It was an agreement that the Soviet Union and Germany would take no military action against each other. To answer your question it is B. The pact was to make sure he could safely attack Poland.
Jazz had its biggest moment in the 1920's so that's out. Speakeasies were very famous because cops were always taking these liquor stores down. And of course, flappers were famous at liquor stores and jazz so i believe football is out ;)
Singapore is the correct answer.
The common law of England was largely created in the period after the Norman Conquest of 1066
The fourth one, “the states are unable to protect the rights of the people.” The federalists were very against stronger states rights as opposed to a strong central government.