The main factor regarding the <span>United States dominating the world economy after the world war 2 was that it was a highly industrialized nation, and had not been "touched" by the war physically due to its isolation between two major oceans. </span>
The Union blockade of the Southern ports was part of General Scott's Anaconda Plan.
The Anaconda plan involved choking off the Southern supply of goods via a port blockage in tandem with the Union Army coming up, around, and down the Mississippi River and working through the south systemically.
The first alternative is correct (A).
The Cold War opposed two powers aimed at dominating the world economic system. The US aimed at developing capitalism and expanding the democratic system, while the Soviet Union aimed to implement the communist system. Communist systems are characterized by state control of the means of production, so that usually only one party controls each communist country.
You are welcome and learn the alphabet first if you can't read
Khaldun <em>was who wrote a book about the history of the world in the 1300's.</em>