 He realized that his position was no longer tenable without the support of an heir who had the approval of both the army and the people . Shortly thereafter , he announced the adoption of Trajan as his successor , and with this decision all but abdicated . Trajan was formally bestowed with the title of Caesar and shared the consulship with Nerva in 98 : 
 He realized that his position was no longer tenable without the support of an heir <a href='null_relcl' title='1'><mark>who</mark></a>had the approval of both the army and the people . Shortly thereafter , he announced the adoption of Trajan as his successor , and with this decision all but abdicated . Trajan was formally bestowed with the title of Caesar and shared the consulship with Nerva in 98 : 
He realized dat his position was no longer tenable without the support of an heir had the approval of both the army and the people . Shortly thereafter , he announced da adoption of Trajan as his successor , and with this decision all but abdicated . Trajan was formally bestowed with tdatitle of Caesar and shared the consulship w Nerva in 98 :