The answer would be A. high taxes, you would not NEED high taxes, although that is what the government wanted.
A, enslaved persons were too valuable for southern leaders to consider emancipation
A because all of those trends have to do when the american revolution becaise the slave trade was very popular in that time period, it was a very diversity subject in the american revolution
Nationalism usually does provoke violence and rebellions within nations. A great example of such a thing was the assassination of Archduke Franz Ferdinand by a Bosnian Serb due to the fact he was a major Serbian Nationalist and believe Bosnia should be apart of Serbia.
Homestead acts.
The Homestead act was an act passed by the government to encourage people to move to the west and claim more land, somewhat influence by Manifest Destiny so that America could span from the Pacific to the Atlantic.
Hope this helps!