“...it was to provide sustenance to the rest of the world.”
Yep. By sustenance I suspect you mean that in addition to being responsible for modern farming and irrigation techniques, sustenance also includes modern manufacturing, electricity, medicine, transportation, airplanes, computers, telephones, satellites and just about everything else that makes modern life possible.
If it were not for the evil white man, the world would still be comprised of savage tribes living in darkness inside straw huts or caves with dirt floors.
Yep, you about covered it.