<span>mixture of river water and seawater </span>
The Sahara Desert is the reason that north africa is differently developed than southern africa.
When Kennedy was president Americans believed that Cuba would send nuclear missiles over the wall, and they were so close to war everyone practiced Bomb drills and made bomb shelters.ヾ(^ω^*)
Technological innovation and growing<span> trade with other nations. Industrial growth.</span>
