How did the land that is now california, nevada, and utah become part of the united states?

Mexico signed a treaty to end war with America and this land was given to the United States.

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.

under god i have placed my chiest strentgh and the safe guard to my loyal subjects