Solid_Choke:If this is true, do I legitimately own the title to my property?
Yes. You've homesteaded it, or bought it from someone who did, or who... etc, etc,
Solid_Choke:I obtained it from a voluntary transaction, but what if a long time ago the people who obtained the title got it using force?
.
If an individual makes a claim that he holds a right aquired as per above, or through explicit inheritance of a rightful claim, the conflicting claims would have to be adjudicated in some way. It's highly doubtful any such individual with a remotely valid claim exists. "Ancestral homeland" is not a legitimate claim.
There is a point at which even legitimate claims are properly considered abandoned for failure to assert them. Add to that the fact that, especially in the US, the chain of claims likely goes back to a homesteader who had no concept of rightful property, and it gets nearly impossible to prove any competing claim.
The criteria was not whether or not anyone ever in history has ever been screwed out of their land, it is whether there is enough certainty in the claim of being screwed to justify forcing you off land that you have invested resources in acquiring and keeping. Adn only individuals can be screwed out of rightful property, not collectives or "peoples".
Solid_Choke:If not, why is it that the state is not entitled to its property?
Because the state is not a moral agent that has any rights whatsoever.
The state won't go away once enough people want the state to go away,
the state will effectively disappear once enough people no longer care
that much whether it stays or goes. We don't need a revolution, we need
millions of them.