The most accurate response to highlight the economic advantage of the North over the South in the early 1800s would be:
Northern industries, such as manufacturing and shipping, benefitted from the cheap southern materials and exporting their own goods.
This statement underscores how the North had a more diversified economy, with a strong manufacturing base that allowed it to take advantage of the raw materials produced in the South, while also developing its own industries. This economic structure provided the North with a significant advantage in terms of production and trade.