Do you think a united world with one race will be a peacful world?

okay i've been arguing with my family lately and sometimes i get pissed off because they talk about different races other then white that they have different and even worst education and that's what makes our races so different now i agree that different races Create different habitats and different cultures because they are genetically different and they have different qualities and i notice through out history where ever a person comes from a different shaped habitat to an other shape of habitat the results are Always catastrophic (racism, antisemitism, war hate killing) now i think the Solution for that will be to Create a united world with one culture but as we see the difference between the third world and the first world we can clearly say that the white education and the culture are better because that what creates our surroundings. but lets say one day in the world will be only one race only one form of education and only one form of culture do you think it will be as good as the white cultures? worse or better? because once all of humanity will be united their will be no difference between races and their will be no reason for racism. do you think that the world will be better or worse because im giving it allot of thought and i want a political stand that has a Solution for racism NOT A VIOLENT ONE ! so do you think a united world with one race will be peaceful world and better wold even from the white world? i'll be vary happy to hear Your opinions because i'm really getting sick of hearing about violent incidences over racism background ! ! !