The OP alluded to non-native Americans who say "we want our country [America] back" in his thread title, so P.E. posted a Native map of America and Mexico before European conquest. Then you come in, and since it strikes a chord with you -these Indian land claims, post up the Ancient Roman Empire that spanned the continents of Africa, Europe, and Asia. The only correlation that map has with the OP's allusion to that sentiment by European Americans and P.E.'s Native American map (operative word being American) is that it is an old map of how territory once was parceled up covering a geographical area. Hence the "weak correlation at best".
And the funny thing about it is the empires you posted up are all of one particular racial group entering the ancestral homes of other races and laying claim to their lands, not so with the Native map.
Fuck Egypt's claim, it isn't the original Kemetians making the claim, probably if we were talking about the Kemetians wanting Kemet back from the Arabs I might care, otherwise, land claims across the Atlantic have nothing to do with Natives here in America, and this ironic statement the progeny of their conquerors are so fond of saying, "We want our country back."