Why is the battle of gettysburg considered a turning point in the civil war?

It is because the Union victory placed the Confederacy on the defensive and ended Gen. Robert. E. Lee's most ambitious attempt to invade the Union's territory.

The way this small state - large state compromise guards against tyranny is that small states and large states have one note: i am sorry but i was not able to give you the full answer. but i got this answer from