What happened during the pax romana?

The Pax Romana was the first 200 years of the Roman Empire that were peaceful and prosperous. Within this time period, there were many different advancements that were happening. Some of these advancements include science, engineering, architecture, art, and literature. 

I could go more in depth, but I'm not quite sure if there are any specifics you are looking for. 

Yes, some people used the depression to the max. not everybody had stocks, and those that didn't bought many things inexpensive, so that when prices rose again, they were much more richer than beforehope this