re: Name a little known fact about the Civil War

The Union didn't see the cause of ending slavery as their primary driver in the war. Their purpose was to hold the union together. The Emancipation Proclamation wasn't signed by Lincoln until 1863, three years after the war began.

Abraham Lincoln was personally against slavery, but in his first inaugural, he made it clear that placating the Southern states was more important. Quoting himself in other speeches, he said, "I have no purpose, directly or indirectly, to interfere with the institution of slavery in the States where it exists. I believe I have no lawful right to do so, and I have no inclination to do so."