This high concentration and oppressive treatment of the slave population led to rebellions. In 135 BC and 104 BC, the First and Second Servile Wars, respectively, erupted in Sicily, where small bands of rebels found tens of thousands of willing followers wishing to escape the oppressive life of a Roman slave. While these were considered serious civil disturbances by the Roman Senate, taking years and direct military intervention to quell, they were never considered a serious threat to the Republic. The Roman heartland had never seen a slave uprising, nor had slaves ever been seen as a potential threat to the city of Rome. This would all change with the Third Servile War.