But Roman growth was unsustainable, occurring under institutions that were partially inclusive and partially extractive. Though Roman citizens had political and economic rights, slavery was widespread and very extractive, and the elite, the senatorial class, dominated both the economy and politics. Despite the presence of the Plebeian Assembly and plebeian tribute, for example, real power rested with the Senate, whose members came from the large landowners constituting the senatorial class. According to the Roman historian Livy, the Senate was created by Rome’ s first king, Romulus, and consisted of one hundred men. Their descendants made up the senatorial class, though new blood was also added. The distribution of land was very unequal and most likely became more so by the second century BC. This was at the root of the problems that Tiberius Gracchus brought to the fore as tribune.
As its expansion throughout the Mediterranean continued, Rome experienced an influx of great riches. But this bounty was captured mostly by a few wealthy families of senatorial rank, and inequality between rich and poor increased. Senators owed their wealth not only to their control of the lucrative provinces but also to their very large estates throughout Italy. These estates were manned by gangs of slaves, often captured in the wars that Rome fought. But where the land for these estates came from was equally significant. Rome’ s armies during the Republic consisted of citizen-soldiers who were small landowners, first in Rome and later in other parts of Italy. Traditionally they fought in the army when necessary and then returned to their plots. As Rome expanded and the campaigns got longer, this model ceased to work. Soldiers were away from their plots for years at a time, and many landholdings fell into disuse. The soldiers’ families sometimes found themselves under mountains of debt and on the brink of starvation. Many of the plots were therefore gradually abandoned, and absorbed by the estates of the senators. As the senatorial class got richer and richer, the large mass of landless citizens gathered in Rome, often after being decommissioned from the army. With no land to return to, they sought work in Rome. By the late second century BC, the situation had reached a dangerous boiling point, both