<span>They both engaged in violent conflicts with indigenous peoples in the territories they explored.</span>
Protective tariffs are taxes, dues, or fees placed on foreign goods. They are a tool countries use to protect domestic industries by reducing competition from international businesses. ... The purpose of protective tariffs is to foster the growth of local industries and protect them from a flood of cheap foreign goods.
"<span>The Union desired to push the Native Americans off of their land to further the expansion West" would be the best option from the list, since both sides knew that their future relationship would not last in any meaningful way. </span>
The russians practiced communism where as the west (usa,britain,france) were anti communist. the us were capitalists , thus is would make sense that the ussr and the usa would clash eventually despite their pasts of helping eachother out. once russia clashed with the west it gave way to the cold war