Why do experts believe humans
began to migrate and expand
outside of the African continent?

because of the evidence in our skin color and eye color. As humans expanded toward the north, out r skin got lighter from less exposure to the sun, and the weather changed the pigment in our eyes.

islamic religious leaders have traditionally been people who, as part of the clerisy, mosque, or government, performed a prominent role within their community or nation. however, in the modern contexts of muslims minorities in non-muslim countries as well as secularised muslim states like turkey, indonesia and bangladesh, religious leadership may take a variety of non-formal shapes.

compared to religious leaders/clerics of the other abrahamic faiths, islamic clergy are said to resemble rabbis and not priests. unlike catholic priests they do not "serve as intermediaries between mankind and god",[1] have "process of ordination",[2] or "sacramental functions",[1] but instead serve as "exemplars, teachers, judges, and community leaders," providing religious rules to the pious on "even the most minor and private" matters.[1]

a reason that was key to coolidge's victory in the 1924 presidental election was that; democratic party supporters were split in the north and south.