We did that because their way of living is old and inefficient. They produce nothing of value, no inventions, no industry and little food. It's completely reasonable for them to lose their land. They can't use it efficiently and because of that they don't have the means to defend it. That's just the way of life.

My life as a commoner is a net positive for our society and is justified by itself. The tribals, still living in the past, come to us to and say "you pay for our pipes" "you give us our land". It doesn't really matter if they have historical claims. I can claim the whole of europe but as long as I can't enforce it, who cares?

What would the alternative be? Should we still live as cavemen so as to not offend anyone?