Which of these geographic factors contributed to the decline of sumer?
it was located on the persian gulf.
the tigris and euphrates rivers flooded every year, leaving behind dark, fertile soil.
sumer was located on a flat plain that provided no natural barriers to invasion.
mountains made agriculture difficult.

the cultivated soil had poor drainage, grain fields of one city-state bordered those of another which caused territorial wars. irrigation of the crops led to salty soil.there was lack of natural barriers that could discourage attack

i would say c.

hope this xddd

d

explanation:

i think that this is the best answer, but im sorry if this is wrong

southerners, for their part, considered brown a terrorist. they felt threatened by northerners' deification of brown and worried about the potential for other, similar armed insurrections.

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