They both did a lot of damage for example they affected the economy & a lot of people died.
Answer:
Ancient Egypt could not have existed without the river Nile. Since rainfall is almost non-existent in Egypt, the floods provided the only source of moisture to sustain crops. ... When the floods went down it left thick rich mud (black silt) which was excellent soil to plant seeds in after it had been ploughed.
The correct answer is B. The Apache tribe.
