Answer:
trade at Songhai was done by land while trade in Mogadishu was done by boats
Explanation:
Songhai participated in the Trans Saharan which mainly took place on land across the Saharan desert while Mogadishu used boats because it was located along the coast and they took part in the East African coastal trade.
American System: the policy of promoting industry in the U.S. by adoption of a high protective tariff and of developing internal improvements by the federal government (as advocated by Henry Clay from 1816 to 1828).
Monroe Doctrine: a statement of United States foreign policy expressing opposition to extension of European control or influence in the western hemisphere.
<span>to aid Panamanian rebellion against Colombia</span>