Westward expansion led to a marked increase in a immigration from Oregon to Alaska
b deaths by cholera and other diseases
c conflicts between the American and British armies
d American technological progress

economic competition is inefficient and wasteful.good luck

explanation:

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.