Why was Egypt interested in controlling the sources of nile​

Egyptian civilization developed along the Nile River in large part because the river's annual flooding ensured reliable, rich soil for growing crops. Repeated struggles for political control of Egypt showed the importance of the region's agricultural production and economic resources.

your mom

now im just trying to get this to 20 characters hope it works hey it works hope it okay bye

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.