some of them think they came from space, too. :evil:
i think people have a romanticized idea of what life might be like if everyone had stayed in their little space and grilled local mammals on a spit.
you can go back as far in history as we have history and someone was always marching, conquering, and the advances of their civilization. it is, after all, the advanced civilization that usually wins wars...if they fight to win.
want to know who is really responsible for Europeans ending up here in numbers? blame the Muslims. :-D one of the reasons for searching out new sea routes for trade was the fact that the Muslims had taken over so many of the trade routes and were taxing, or killing, travelers/traders. at that point, the Arab and Persian countries had some of the most advanced mathematics and tech understanding on earth. the next great leap in tech came from sea travel and the Arab countries and peoples were left behind because they were still taxing land trade instead of learning new skills.
the world moved on and they ended up back in the huts. colonization brought them into the modern world and those with oil....well, we know how all that has gone.....