The answer to this would be the Commerce Clause. Hope this helps! :)
.American Civil War or other name of Interstate War, the United States who want to leave this country with a government in Washington came from 11 southern states is a comprehensive civil war. 11 Southern States president Abraham Lincoln declared their independence in 1860 with the election of Jefferson Davis command. The war began in April 12, 1861 with the first artillery from Fort Sumter in South Carolina.
I believe it was textile mills, but I’m not 100% sure.