The news of the Boston Tea Party reached London, England on January 20, 1774, and as a result the British shut down Boston Harbor until all of the 340 chests of British East India Company tea were paid for. This was implemented under the 1774 Intolerable Acts and known as the Boston Port Act.
It made getting from New York to the Pacific ocean easier and faster and getting from San Francisco to the Atlantic ocean easier and faster. Hope this helps!