How did Augustus influence the later development of the Roman government?

he built bridges and aquaducts
Augustus radically transformed the Roman government. He emerged as the final victor of the civil wars which tore the Roman Republic apart. He established his own absolute power, became the first Roman emperor and started the 503-year period of absolute rule by emperors.

Augustus did away with the constitutional arrangements of the Roman Republic. The powers of the popular assemblies to elect the executive officers of state were transferred to the (unelected) senate. The senate, in turn, was turned into an instrument of his power. Augustus came to appoint the officers of state himself. He also created an imperial bureaucracy he was in charge of. He also took control of the Roman legions and ensured that the soldiers were paid by the emperor by creating a military treasury under his control. He also made all the executive decisions. The tight control of the emperor over the state and politics was continued by his successors.