Question

One similarity between the Nile River valley and
savanna lands in Africa is that they both
(1) served as major barriers to the movement of
people and goods
(2) provided necessary resources for settlement
(3) are located on the western side of the
continent
(4) had little effect on the lives of the people who
lived in these regions

Answer 1

One similarity between the Nile River valley and savanna lands in Africa is that they both "(2) provided necessary resources for settlement," since these areas offered rich soil and other resources that were essential for the development of sustainable societies.