Your gonna have to give me the answers first. This is not my answer
It was the main supplier of cotton
it was the central rail hub
False...
before 1941 The US declared itself neutral in European affairs. Roosevelt did however support Britain through the Lend-lease Act which in a sense did not mean the US was militarily intervening before Pearl Harbor
They were really into building ships later on and people liked them and wanted to buy them so i think that is the answer