A result of the Treaty of Guadalupe Hidalgo was that O Texas gained much of the land controlled by Mexico.
O Texas became an independent republic.
O the United States got control of the Mexican Cession.
O the United States gave control of California to Mexico.

d) a constitutional amendment

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.