In September 1774, the convened in Philadelphia to consider united action to defend the liberties of the American people against the excesses of the British government.

First Continental Congress

Explanation:

In September 1774, the First Continental Congress convened in Philadelphia to consider united action to defend the liberties of the American people against the excesses of the British government.  The congress was made up of representative from 13 American colonies, the aim of the meeting was in reaction to the measures imposed on them by the British due to their resistance to the new tax policies. At the congress, the colonies agreed to stop importing goods from the British Isles beginning on December 1, 1774 if the British government does not reconsider its coercive measures against the colonies and they also petitioned the British government over it's right to tax them.

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the use of electrical signals that transit messages is know as