But in 117 , just a year later , Trajan 's successor Hadrian gave up most of the land that Trajan had conquered .
The Parthians were in disarray at this time , due to civil wars , and unable to offer much resistance .
In 117 , just a year later , Trajan 's successor Hadrian gave up most of the land that Trajan had conquered .
The Parthians were in disarray at this time , due to civil wars , and unable to offer much resistance .