In one or two paragraphs, explain how and why the location of western African kingdoms allowed them to grow wealthy. I'LL GIVE BRAINLIEST IF SOMEONE DOES IT RIGHT

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The league of nations was found in 1919 to keep peace after world war l.but it failed to prevent world war ll in 1939,so in 1945 the nations of the world set up a new organization,the united state (un).since then, the un has encouraged international cooperation and worked to resolve conflict