What was the purpouse of both the truman doctrine and the marshall plan was to

The purpose of both the Truman Doctrine and Marshall Plan were to curb the spread of Communism.

Explanation:

The Truman Doctrine was an American foreign policy which stated purpose was to contain Soviet geopolitical expansion during the cold war.

The Marshall Plan was a Economic recovery plan to help recover Western Europe's devastated economy after WW2, and was only available to non-communist nations

largest usa states are texas north dakota california

globally saudi arabia russia usa

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker