[jmacusa]

Then why did they go to war to preserve it?

[RegulatorCountry]

I suppose you believe the Union fought to end slavery too, with four slave states on the Union side and a constitution that had to be amended in order to end slavery.

[DiogenesLamp]

Then why did they go to war to preserve it?

Repeat the lie, repeat the lie, repeat the lie.

Why did the Union go to war to keep slave states in it?

If I lie in the manner that you do, I would say "Why did the Union want to keep the slave states? "

Why was the Union trying to preserve the slave states remaining in it?

See how this sort of lying works?