My colonial ancestors bought the land granted to them by the English Crown from both tribes who were fighting over it. Manhattan Island was bought. It wasn't all "stolen", by any metric. The remainder was conquered, by displacement or conflict.
Like is happening in Europe.
If Rabb doesn't like it, he can go where the land wasn't stolen. If he thinks that's England, I have news for him. My people were in on that little thing that happened in 1066, too, the one referred to as "The Norman Conquest". We took it from the people who had taken it back from the Romans.
That history stuff is complicated, wot?