Truman implemented this in response to two threats one being a communist-led uprising against the government in Greece and two being Soviet demands for some control of Turkey's Dardanelles. It was implemented in Berlin when Truman ordered U.S. planes to fly supplies to the people of West Berlin in response to the Soviet Union's 11 month blockade on Berlin.. or something among those lines
Why Chaucer wrote The Canterbury Tales?
(Selectable sources for further study on The Canterbury Tales and Geoffrey Chaucer.) About The Canterbury Tales: Geoffrey Chaucer wrote The Canterbury Tales, a collection of stories in a frame story, between 1387 and 1400. It is the story of a group of thirty people who travel as pilgrims to Canterbury (England).
The Sherman Antitrust act was created for that purpose, but it was also supported by the Clayton Antitrust Act which came later on. Roosevelt was known as "Teddy the Trust-Buster" for his strict enforcement of these acts.