Five of the U.S. 's largest ports are located in Louisiana , including Baton Rouge and New Orleans .
Being at the mouth of the Mississippi River makes Louisiana 's ports major entry points to the rest of the United States .
Five of the United States 's largest ports are located in Louisiana , including Baton Rouge and New Orleans .
Being at the mouth of the Mississippi River makes Louisiana 's ports major entry points to the rest of the United States .