Answer:
The great depression and overall instability and lost glory after WW1.
Explanation:
A ...........................
1. Ford= Model T
2.Wright= Airplane
3. Whitney= Cotton Gin
4. Field= transatlantic cable
5.Hargreaves= Spinning Jenny
6. Cooper= Steam locomotive
7.Howe= sewing machine
Hope this helped!
One reason is that the Nile overflowed and the valley soaked up the water and therefore made it very fertile
