The First Continental Congress was a colonial resistance against Parliament's Coercive Acts.
Explanation:
The main achievement of the First Continental Congress was to organize the colonies to boycott British goods. It began on December 1, 1774 and the objective was to force parliament to rescind the Intolerable Acts.
The Coercive Acts was a series of measures adopted by the British government because the colonies didn't agree with the establishment of new taxes.