Why was slavery bad (write an abolitionist speech), and why would people join your cause? (2 paragrah)

Slavery is objectively harmful for total economic output and social development. as jus cogens, a norm from which no derogation is ever permitted. As an illegal economic activity, it is restricted, at least nominally, in all nation-states.

The economics of slavery were probably detrimental to the rise of U.S. manufacturing and almost certainly toxic to the economy of the South. ... From there, production increases came from the reallocation of slaves to cotton plantations; production surpassed 315 million pounds in 1826 and reached 2.24 billion by 1860.

Explanation: