The first cause was the influx of slave-grown corn from Sicily, Sardinia, Spain, and Africa, which ruined many Italian farmers by reducing the price of domestic grains below the cost of production and marketing. Second, was the influx of slaves, displacing peasants in the countryside and free workers in the towns. Third, was the growth of large farms. A law of 220 forbade senators to take contracts or invest in commerce; flush with the spoils of war, they bought up extensive tracts of agricultural land.
