His uncle Julius Caesar died when Augustus was at a military camp. He was the Heir, so he followed Roman republic traditions, instead of Monarchy or Dictatorship. The Republic was unstable since civil war.
Augustus Caesar was a great leader. He built roads across the empire. He decorated the city of Rome. He established a police and fire department in Rome as well. He also made a postal service in Rome. His rule was the beginning of an era called the Pax Romana (Roman Peace).