Why did city states arise along east africas coast​

City states rised along east Africa because there was water and land I know this because I just took the test

Explanation:

African slave trade started here and Africans have to have water to grow crops and because if Africans sold slaves to Arabia so they could produce trade and because Islam did not allow enslavement of Muslims

c. it required that townships set aside land for public schools.

the urdan working class