1.7 billion people in 1950 to 4.1 in 1990 and to 4.9 billion in 2000
Islamic armies conquered major cities to help spread islam on three continents.
Under federalism, It would be both state and federal government that has concurrent powers. These are powers in nations with a federal system of government that are shared by both the federal government and each constituent political unit. Hope this answers the question.
I believe the answer is: "Promote white supremacy, but never do so explicitly."
Even though advocation to promote the superiority of white races never really came out of his mouth, his actions to deny the black students their right to obtain educations indicates that He held a discriminatory behavior toward racial minorities.