Answer:
The (non-existing) communist threat.
Explanation:
The. Berlin Blockade (1948-1949) can be seen, in retrospect, as the start of the Cold War. The Sovjets blocked the Western sectors of Berlin as a protest to the introduction of the Deutsche Mark in Berlin. This event troubled the already tense relationship between the two world powers.
Now it must be said that from the beginning the wide-spread belief that the U.S.S.R and it´s communist comrades (Cuba) was going to complete what Hitler couldn´t manage, i.e. conquer the whole world, was, in retrospect, an absurd idea from the American side.
This by paranoia fueled belief - see for more information Eric Hobsbawm in <em>The Age of Extremes </em>- was shown clearly in the Truman Doctrine, the failed invasion in Cuba and the Cuban Missile Crisis, not to mention the Vietnam War in which several American presidents <em>¨tapped their way through a dense cloud of incomprehension, confusion and paranoia.¨ </em>Eric Hobsbawm
The main thing that <span>happened as a result of the Embargo act of 1807 was that all exports of goods and services from the United States were made illegal. </span>
The correct answer among all the other choices is C. Petroleum. Food availability would be most affected by the shortage of this energy source. I hope this answer helped you.
Closed questionm thoiooooooooooo