Why was the partnership between Nubia and Egypt always tense?

A. They were in conflict with who was controlling what land.
B. They could not share the resources available to both of them.
C. The leaders had a fued with each other.
D. Communication was restricted because of the great distance

Hey!me its for an important test! ! which issue during the progressive era would most likely have united mary harris "mother” jones and lewis hine? a) ending child labor b) regulating monopolies c) using photography to expose poor working conditions d) exposing the lack of jobs available for untrained laborers