1) I am not a "Yank."  I am a citizen of the US, and a human being.

2) So what?  Killing Jews was legal in Germany in 1944.  Oppressing votes was legal in the 1950s south.  Discriminating against people of color, and making them use separate restrooms was legal then, too.  Doesn't make it moral or right.  Your attempt to belittle another human's understanding of this by using dog whistle words like "politically-correct" is disgusting and reprehensible.

3) Wrong.

4) Wrong.

5) Irrelevant what other "goals" the North had.  The main reason for this war was the fact that the secessionist did not want to give up their slaves, and were willing to dismantle a country over it,

6) The "main issue of the war" to Lincoln was the preservation of a nation.  The secessionists' insistence on keeping slavery, and their willingness to dissolve the union was the catalyst that caused him to have to act.

7) Agreed that the murder of Lincoln was tragic.  The rest of your diatribe was nonsense.