How did the three-fifths compromise change politics in the united states before the civil war? (select all that apply)
~northerners were able to admit the california territory into the country as a free state.
~northerners passed the wilmot proviso to law slavery in land gained through through mexican-american war
~southerners were able to pass key pieces of legislation through congress.
~southerners were able to maintain control of the presidency because of the number of electors from each state

The Three-Fifths Compromise was created to resolve the debate over the inclusion of the slaves in the measurement of a state's population for legislative and taxation purposes. The effect of the compromise enables the slave states to have an advantage over the representation in the House of Representatives. This advantage spilled to having a disproportionate influence on the presidency, the speakership of the House, and the Supreme Court in the period prior to the Civil War.
The correct Southerners were able to maintain control of the presidency because of the number of electors from each state.