During the Roman period, the area of what is now Tunisia enjoyed a huge development. The economy, mainly during the Empire, boomed: the prosperity of the area depended on agriculture. Called the ''Granary of the Empire'', the area of actual Tunisia and coastal Tripolitania, according to one estimate, produced one million tons of cereals each year, one-quarter of which was exported to the Empire. Additional crops included beans, figs, grapes, and other fruits.