You are aware that there were shipping lanes and trade for as long as there has been civilization.... Hemp is Cannabis, ignorant ones. Hemp ran this whole world as rope, sails, feedstock, etc. The govt actually asked farmers to grow hemp for the war effort. Ask anyone from Kansas. Hemp can still be found in ditches.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://en.m.wikipedia.org/wiki/Hemp_for_Victory&ved=0ahUKEwjjqsbzvejUAhXFLmMKHQzgD2sQFgg-MAo&usg=AFQjCNGXCEtAoF8_R39v6yfzD01oVwUsIQ

Henry Anslinger, Boyd you should remember him. He is the one who ran propaganda against you guessed it! Mexicans and Blacks. Wow we are still using them as scapegoats, huh?! Imagine that.