A. Winston Churchill
B. Josef Stalin
C. George Marshall
D. Harry S. Truman

Harry S. Truman

Explanation:

Winston Churchill was the leader of Great Britain, so it is unlikely he ever would have given a speech to the US Congress.

Josef Stalin was the leader of the USSR and would not have given a speech before Congress, let alone to ask for assistence for Turkey and Greece (which the US was trying to prevent from being taken over by Communists)

Based on the job of the president, it makes the most sense that this speech would have been delivered by President Truman. The president is the supreme commander of the military, but must ask Congress for funding for the military. Also, this speech communicates what is known as "The Truman Doctrine", which is to provide aid to free countries to prevent them from becoming communist.

the story goes that because of this belief, constantine was able to defeat his foes. constantine became an ardent1 christian. christianity and other religions were tolerated under constantine's rule. constantine also was responsible for the building of a great cathedral in rome.

should be the answer hope this