The concern for their economic livelihood led to a. northern states'; the separation of powers b. southern states'; a promise to never abolish the slave trade c. southern states'; them gaining a majority of seats in the new house of representatives d. northern states'; a promise to never abolish the slave trade e. southern states'; a promise to not impose export taxes

The correct answer is statement D.

This is correct because during the Antebellum era, the South relied heavily on trade with other countries like France and Great Britain. This is due to the fact that many Southern plantation owners focused on producing massive amounts of cotton. This valuable commodity allowed the Southern states to trade for other resources they needed from other countries. If a tax on exported goods was added, it would cripple the Southern economy.

following type of cultural development caused people to want and buy new products on the market :

industrialization