If the first human beings came from Africa and had melanin, then where did all of the other races of the world come from?

they migrated to other parts of the world. such as europe where it is very cold so over time they didn't need melanin because it wasn't necessary. the reason they had melanin in africa is so they didn't get burned by the sun but in cold places on earth it isn't necessary

its b wells tried to fight lynching in the south by

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to