What model suggests that living humans came from the species homo erectus and that their development took place through the world

I wouldn't suggest trying to find proof that Evolution even exists because it is only a theory and there is no proof of it. Darwin believed in god but after his daughter's death he blamed her death to God and therefore found another answer to how human's exist.There are more evidences in why God exists than why evolution exists. I have books to back me up. The book: "Life how did it present itself? Evolution or Creation" say's: "Scientist have no clear answer because the chemicals used in all experiments to prove the right hood of Evolution has no wanted result. Things can't do things on their own without someone provoking a move to make a reaction..." pg 17. You can also find more info in JW.ORG about this subject.

The led the formation to the united states