O blood is the universal blood and can be transfused into any other blood group but the others cannot be given to someone with the original blood type O. How can Africans cultivate crops in the Americas? Cocaine is American and was brought to Kemet when it was colonized by ancient Americans known as the Xi or Mayach. The American chromosome was 11 mutations from the Cameroonian and after 9 mutations they are unrelated. Also the Atlantic ocean can be traveled in both directions why do you assume Africans came to America and not the other way around. America has the oldest mummies, pyramids, megalithic structures, plants, trees and written scripts etc. not Africa and many Africans came into Africa from Asia and Europe recently. They are actually one land mass. America was the first continent to rise above the primordial waters and even the Nile Valley Africans say their ancestors came from the west.