A dependent clause should have no punctuation between an independent clause when the dependent clause comes afterwards.
T.S Eliot's "The Waste Land" and Geoffrey Chaucer's The Canterbury Tales differ in their interpretation as they describe April's showers. In "The Waste Land", T.S Eliot described it as "sweet", but in The Canterbury Tales of Geoffrey Chaucer, he described it as cruel. Hope this answer helps.
Answer:
After the invention of the cotton gin in 1793, the economies of the Upcountry and the Low country of the state became fairly equal in wealth. The expansion of cotton cultivation upstate led to a marked increase in the labor demand, with a concomitant rise in the slave trade.