Answer:
Fort Defiance was established in 1851 by Col. Edwin V. Sumner to set military presence. The Federal Government banned the Navajos to use or access this area. Consequently, they begun fighting, ending in two attacks: 1856 and 1860. In 1861, the army left Fort Defiance, but Brigadier General James H. Carleton continued fighting the Navajos.
If you are talking about the time around slavery then, the north wanted to wourk out diffrences because they didnt want slavery but didnt want war either
Feudalism declined, increased trade between the middle east and it helped spread cultural diffusion.
-Lucky
B) The colonists resented that they were not able to settle on land that Great Britain took after the French & Indian war.