Under the truman doctrine the united states became committed to counties that were

The correct answer is fighting a communist takeover.

The Truman Doctrine was created after World War II in order to help those countries who were in jeopardy of falling under control of communism. In the Truman Doctrine, the US federal government is going to agree to give $400 million in economic aid to Greece and Turkey. The goal in giving this money is to help the countries recover from World War II as well as developing a political and economic alliance.

i think your answer there is c

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to