What impact did the closing of the port of new orleans to american colonies?

The Port of New Orleans [1] (in English: Port of New Orleans) is a port located in New Orleans, Louisiana. It is the sixth largest port in the United States by volume of cargo handled, the second largest in the state after the southern port of Louisiana, and the 13th largest in the US. based on the value of the load. It also has the longest pier in the world, which is 3.4 km long and can accommodate 15 ships at the same time. The port of New Orleans handles about 62 million tons of cargo a year. The port also handles around 50,000 barges and 700,000 cruise passengers per year with several Carnival, Royal Caribbean and Norwegian Cruise Lines ships making it one of the nation's first-class cruise ports.

  the domino theory states that  if one country in a region came under the influence of communism, then the surrounding countries would follow in a  domino  effect.