The answer I think to this is C. Eisenhower
Hope this helps in anyway? and sorry if it's wrong.
The way that camels help increase trade across geographic barriers of northern Africa is : Camels helped with transportation.
Back
then, we still have not developed machine based transportation
vehicles, so we rely on ships and carts. Since the horses are unable to
cross pass the desert, most of the animals that is used on northern
Africa trade were camels.
Oct. 29 1929 - 1939. Surrounding Decline before and Fallout after surrounding these dates can be found, but overall this is the most commonly accepted timeline.
