In the US, they sing a song about the war of 1812 before every major event. People might not remember the details, but it's fully baked into our culture.

Do you remember your President Nixon?

Do you remember the bills you had to pay?

Or even yesterday?

(Sorry, this young American couldn't help it.)

Everyone still talks about slavery’s effects.

I think that's because race issues are still very much (and sadly) a thing in 2021, and understanding race issues in historical context is very important. Also slavery still exists to this day.

Race issues are an issue everywhere. No study of American slavery would help any race issues today, nor has it ever.

I guess we'll have to strongly disagree on this