The person after whom the prize was named is Joseph Pulitzer I'm 100% sure hope it helps
The Truman Doctrine was an American foreign policy whose stated purpose was to contain Soviet geopolitical expansion during the Cold War. It was announced to Congress by President Harry S. ... More generally, the Truman Doctrine implied American support for other nations thought to be threatened by Soviet communism.
A.) Poison Gas is the answer
Answer: A secondary source of information is one that was created later by someone who did not experience first-hand or participate in the events or conditions you're researching.
Explanation: