Pax Romana was The period in which the Republic ruled Rome
The time of war
The peace that lasted during the Empire
The Time of Chaos during the collapse of Rome

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.