In december 1989, the united states invaded to protect the americans there. yugoslavia iraq kuwait the panama canal zone

In December 1989, the United States invaded the Panama Canal Zone to protect the Americans there.

Explanation:

The US invasion of Panama in 1989 was a military operation of the United States Army carried out between December 20, 1989 and January 31, 1990, with the purpose of capturing General Manuel Antonio Noriega, de facto governor of Panama, who was required by the US justice for the crime of drug trafficking, as well as neutralizing the Panamanian Defense Forces and protecting the integrity of the American residents in the Canal Zone. The operation was called Operation Just Cause by the US military command, and resulted in approximately 3,000 deaths.

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the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.