What was mcduffie's economic argument for slavery

In 1835, Governor of South Carolina George McDuffie in his famous speech he act as a defender of slavery in economic terms.

1. He argued the sudden end of slavery will lead to falling off the economy of the south which was founded based on slavery.

2. He further argued, If all the slaves were freed it will lead to widespread unemployment and bloodshed in the entire region fall in the state of "anarchy" (stateless society).

3. He further argued, In the bible also Abraham had slaves therefore, slavery existed since the history of mankind.