It did not lead to the Civil War, what led to the civil war was the war of 1812. That was when U.S.A recognized that it needed to become stronger, and slaves were transported to the United States and put in the working class under bad conditions. Child labor and prejudice began there as well.
These two river valleys were similar, because they both had a government form in hierarchy. They both had a ruler, and they were in the monarchy system. Some of the systems were considered to be well off systems because they were able to rule without disruptions and others had systems which were not in equality with men and women.
The federal government was too weak, and couldn't enforce their laws. They had borrowed money for the Revolutionary War and couldn't pay their debt. They also lacked the power to tax.
Therefore, the answer would be the first one.
Rock and Roll came out about the time of the Television gaining popularity in the U.S. Television was absorbing the dramas that had previously been on radio. As such, radio was expanding into the music market. One of the pioneer radio hosts was "Moondog" Alan Freed in Cleveland, Ohio is credited with naming this new style of music which was in part derived from R&B music.
The correct answer is A, NAFTA
