Please someone help me

In shifting to a defense policy based upon the concept of "flexible response," president kennedy was indicating that he had grave doubts about thevalue of which previous defense policy? a massive retaliationb collective securityc containmentd air power

Ahistorian who compares the expansion of political systems to the expansion of economic systems is organizing history by

Which were the most important issues during the presidential election of 2008? a. economic downturn and environmental protection b. two overseas wars and economic downturn c. two overseas wars and campaign spending d. environmental protection and campaign spending