Why was it necessary to abolish slavery in ancient Rome?

Slavery in ancient Rome was not abolished by any order. Its historical withering away took place in the II – III centuries of our era. During this period of time, Rome no longer waged such a large number of wars and the flow of prisoners of war was sharply reduced. In addition, after the uprising of Spartacus, citizens were afraid to keep many slaves.

Former slaves were recruited to cultivate the land. This was done by free tenants who were called columns. Slavery gradually developed into serfdom. Already in the IV century, a significant part of the population of the Roman Empire was turned into serfs.