That would be D.) New York, Massachusetts and Vermont
Answer:
they served as training facilities
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>