A plan was proposed to create a Union of Great Britain and the Colonies, but the delegates rejected it. They ultimately agreed to impose an economic boycott on British trade, and they drew up a Petition to the King pleading for redress of their grievances and repeal of the Intolerable Acts. That appeal had no effect, so the colonies convened the Second Continental Congress the following May, shortly after the battles of Lexington and Concord, to organize the defense of the colonies at the outset of the Revolutionary War. The delegates also urged each colony to set up and train its own militia.