1. which culture carried the knowledge of iron tools across south africa's in the series of migrations?
a. nubian's
b. arabs
c. bantu
d. europeans

2. which group of foreign traders first became involved in eastern africa's slave trade?

a. arabs
b. british
c. dutch
d. portuguese

3. scientist have found of early human beings in eastern africa?

a. musical instruments
b. fossils
c. homes
d. clothing

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada