Proto Indo-Europeans. The language they're believed to have spoken is the common ancestor of most European languages (eg. Latin, German) and Hindi. This invas

Proto Indo-Europeans. The language they're believed to have spoken is the common ancestor of most European languages (eg. Latin, German) and Hindi. This invasion may have been more of a linguistic and cultural spread by imitation than people of one ethnicity actually displacing another. Doubtless there's some of both.