Where do scientist believe modern human beings originated?

Out of Africa. They were thought to be originally dark hence why black people are that way, so Africa it is. Africa is warm so it would make sense. Then these people would span out into the European areas, and since those climates are colder, they would become paler over time, hence how white people have less melanin than black people. I learned this all yeeears ago :P You're welcome

maybe #3? try that i think its correct

the phenomenon that would be cited as evidence of increased economic interdependence between europe and the americas is  the development of mercantilism.

this theory suggests that the wealth of a country depends on its economic assets, or capital.

hope this : )