The South would have kept their independence. But many countries would have refused to trade with a slave-owning nation, and slavery would have died-out naturally by about 1880.
Only in the North
Abraham Lincoln had always had a distaste for slavery. It is assumed that this is due in part to his strong religious convictions.
Both had a strong position in the Anti Slavery debate. They both were against slavery and agreed that there should be no more slave states.
For the most part the Lincoln and Douglas debates centered around slavery. Lincoln made it clear how strong his opposition to slavery was. Douglas was not a pro-slavery advocate, but trusted the US Supreme Court decision in 1858 that basically declared slavery legal.
1857-1865, 1865=abolition of slavery
he wanted to build a strong base of political supporters
he wanted to build a strong base of political supporters
Both had a strong position in the Anti Slavery debate. They both were against slavery and agreed that there should be no more slave states.
The root cause of the US Civil War was the strong desire of the southern states to maintain slavery in the face of increasing northern opposition to slavery and the growth of the northern population that seemed certain to eventually control the Federal Government and abolish slavery.
he wanted to antagonize the southhe wanted to build a strong base of political supporters
The Abolitionist movement was a movement against slavery in the 19th century USA. During the century it became a strong political force, but they did not easily get support in the Congress. Nevertheless, this movement led to the American Civil War as this question (whether to abolish (ban) slavery or not) divided the states.
Because Lincon wanted to make sure that the union was strong before he did anything else.