Why did some paleolithic people in east africa migrate to other areas between 100,000 and 75,000 years ago?

a. rival groups drove them out
b. farmland became increasingly scarce
c. the climate became very unstable

toi khong biet cau tra loi

oh i never knew that

explanation:

how they should count slave votes (three-fifths compromise), the state representation in congress, and how much power should be given to our national government.