These taxes were higher than most people could afford
Christianity also created problems for the Roman Empire.
died of starvation
Roman citizens became monks and refused to get married and have children.
The Romans called the people who lived outside the Roman Empire barbarians. In the 4th century AD the Roman Army had considerable difficulty in stopping these Barbarians from entering the Roman Empire.
Some Roman citizens, upset by heavy taxation and suffering from poverty, formed themselves into an armed resistance group called the Bagaudae