Answer:
Slavery is important to keep the agricultural sector important. Without slave labor there will be problems in the supply of food as well as problems in the export market.
Step-by-step explanation:
Slave labor was used mainly on farms to perform agricultural services, responsible for a good part of the country's economy, in addition to being responsible for the production of food needed by American citizens.
This situation could be used to show that the abolitionist idea that Franklin supported would not work and that it would prevent the country from becoming large and powerful.