Pax Romana, a state of comparative tranquillity throughout Classical antiquity and the Mediterranean world from the reign of Augustus (27 bce–14 ce) to the reign of Marcus Aurelius (161 –180 ce). Augustus laid the foundation for this period of concord, which also extended to North Africa and Persia. The empire protected and governed individual provinces, permitting each to make and administer its own laws while accepting Roman taxation and military control.