Answer: i think it is U.S. Civil War
Explanation:
<em>Musa I of Mali, mansa of the West African empire of Mali from 1307 . ... and riches—he built the Great Mosque at Timbuktu—but he is best remembered ... Traveling from his capital of Niani on the upper Niger River to Walata ... behaviour of his followers, did not fail to create a most-favourable impression.</em>
Answer:Emergency Quota Law of 1921
In 1921, there was a drastic reduction in immigration levels from other countries, principally Southern and Eastern Europe.
Explanation:
Long title An Act to limit the immigration of aliens into the United States.
Nicknames Per Centum Limit Act
Enacted by the 67th United States Congress
Effective May 19, 1921