It’s a shame we don’t have more written history of the last 20,000 years.
In truth...it is most likely that things similar (albeit on a pre-historic scale) were responsible for many migrations, etc.
As my Grandma always said - the new generation always thinks they are the first to experience love and sex.
My guess is that the majority of the exploration on all continents were driven by love and sex.
That, and maybe a little food.