What was the strategy of the north to regain control over the southern states in the civil war?

The north plan was to cut the south supply route in half by controlling the Mississippi river, the other plan was Gen. Sherman's march to the sea, he goal was to make war so bad than no one would want to fight his plan was to destroy everything not just military targets but civilian targets as well and the final place of the north was to free all the slaves in the south and this would take away the south labor force. Remind you this did not free the slave in the north. The slave in the south was freed January 1, 1963, the slaves in the north was not freed until 1866. The last slaves in the south was freed in Texas on June 19, 1865. It took two years for information to get to them, that why some Black today celebrate junteeh (June 19) as their fourth of July