Which physical feature dominates (it is the largest) East Africa? A : Lake Victorian
B: Great Rift Valley
C: Nubian Desert
D: Sudan

Great Rift Valley cuz the internet said so :)

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.