Pls ! how did abraham lincoln's election as president increase the tensions between the north and south that eventually led to the civil war? (a)lincoln felt that the union and confederate states should remain separate and establish their own governments. (b) even though lincoln did not win the popular vote, he became president in 1864 based on the electoral vote which angered the southern states. (c)lincoln was opposed to slavery and made efforts to stop the growth of slavery in future states. (d)because lincoln was the nation's first republican president, many southern states disagreed with his governmental policies.