The conflict between Octavian and Antony became serious, and soon there was war. Cleopatra was wealthy, and she used her money to help Antony. But Octavian won the war. He became the ruler of the Roman Empire and was known as Augustus or Caesar Augustus. He took control of Egypt from Cleopatra. After her kingdom was conquered, she committed suicide by letting an asp (a poisonous snake and small cobra) bite her. Antony also committed suicide.