"When men started to sail across oceans and continents, they discovered lands and people which are different from their own...First, they conquered because the land/people discovered tend to fight them with bows, arrows and stones.

Then they lived with them... became part of them. He planted his seeds and earned in this new land. Then he understood really what it was to be like them...

So centuries come, his children became native to this land... New people again came... but as their forebear taught them... they welcomed them... "

but maybe not this simple...