What group threatened stamp agents appointed by the British Parliament?

the sons of liberty.

Explanation:

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others, still angry about the revolution, argued against a commercial treaty with the britain promised to withdraw all of its troops from america after the in the northern frontier, however, the british refused to surrender several military posts on a stronger central government in america may have resolved these foreign.

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answer: the ocean

explanation: if you map out 30 n and 40 n latitude, you will get the ocean