On June 1, 1774, following the passage of the Boston Port Act, the government ordered the Port of Boston closed to punish colonists for the Boston Tea Party. From the article:
"The Coercive Acts of 1774, known as the Intolerable Acts in the American colonies, were a series of four laws passed by the British Parliament to punish the colony of Massachusetts Bay for the Boston Tea Party. The four acts were the Boston Port Act, the Massachusetts Government Act, the Administration of Justice Act, and the Quartering Act. The Quebec Act of 1774 is sometimes included as one of the Coercive Acts, although it was not related to the Boston Tea Party. These oppressive acts sparked strong colonial resistance, including the meeting of the First Continental Congress, which George Washington attended in September and October 1774."