The term "Pax Romana" refers to the period of a. peace and prosperity during the first two centuries of Roman Empire.
"Pax Romana" is a Latin term which means "Roman Peace". This long period of peace and prosperity spanned for an approximated 206 years, after the end of the Final War of the Roman Republic and before the start of the Crisis of the Third Century.
"Pax Romana" was also called "Pax Augusta" since it was established by Augustus when he defeated Marc Antony in the Battle of Actium in 2nd September 21 BC. Augustus then created a junta of the greatest military magnates and stood as their leader. This move eliminated the possibility of having a civil war among great military leaders.