Politically Correct History

We are taught that the "Civil War" was fought over the issue of slavery and that the "Noble North gallantly fought to free slaves and preserve the Union".   However this is very far from the truth. The Issue of slavery didn't even come into the picture until 19 months into the war, but the North needed a moral reason to justify their invasion of the South, so they grasped at slavery and presented the South as "racist, biased bigots".  The truth is that many of the Southerners didn't have slaves and those who did were not against the idea of freeing them, they only fought for their right to make that decision themselves.  Northerners freed their slaves because they thought of them as an inferior race and didn't want them near them, and they went so far as to enforce bans to keep Blacks out of their states ( which is why the underground railroad led to Canada, not to Northern states).  The North invaded the South because of the high revenues they got from the South through high taxes and tariffs, so it was a greedy, selfish cause that motivated the North.  But of course that was kept undercover and a cause was made up to justify their war.  And even during the time of "Reconstruction", the North harassed the south for their "rebellions", stripping Southerners of their Constitutional right as U.S. Citizens and forbidding them to vote. But all of this was hushed up through politically correct history, indoctrination, and Northern propaganda.