na ▁Germania ▁into ▁the ▁Roman ▁Empire ▁was ▁fr ustr ated ▁when ▁three ▁Roman ▁leg ions ▁under ▁Var us ▁command ▁were ▁anni h il ated ▁by ▁the ▁German ▁tribes men ▁in ▁the ▁Battle ▁of ▁the ▁Te ut ob urg ▁Forest ▁in ▁ 9 ▁AD . ▁August us ▁then ▁ordered ▁Roman ▁withdraw al ▁from ▁Mag na ▁Germania ▁( comple ted ▁by ▁AD ▁ 1 6 ) ▁and ▁established ▁the ▁boundary ▁of ▁the ▁Roman ▁Empire ▁as ▁being ▁the ▁Rh ine ▁and ▁the ▁Dan ube . ▁▁ ▁Under ▁Em per ors ▁V esp as ian ▁and ▁Dom it ian , ▁the ▁Roman ▁Empire ▁occupied ▁the ▁region ▁known ▁as ▁the ▁Ag ri ▁Dec um ates ▁between ▁the ▁Main , ▁Dan ube ▁and ▁Rh ine ▁rivers . ▁The ▁region ▁soon ▁became ▁a ▁vital ▁part ▁of ▁the ▁L imes ▁German icus ▁with ▁do z ens ▁of ▁Roman ▁for ts . ▁The ▁Ag ri ▁Dec um ates ▁were ▁finally ▁abandoned ▁to ▁the ▁German ic ▁A lem anni , ▁after ▁the ▁Emperor ▁Pro bus ' ▁death ▁( 2 8 2 ). ▁ ▁Some ▁parts ▁of ▁this ▁early ▁province ▁were ▁incorpor ated ▁into ▁either ▁▁ ▁Germania ▁inferior ▁or ▁Germania ▁superior ▁in ▁AD ▁ 8 5 . ▁ ▁In ▁T ac it us , ▁Germania ▁Anti qua , ▁or ▁Germania ▁Barbara , ▁are ▁syn onym s ▁of ▁Germania ▁Trans r hen ana , ▁also ▁Germania ▁Mag na , ▁i . e . ▁the ▁part ▁of ▁Germania ▁on ▁the ▁right ▁side ▁of ▁the ▁Rh ine . ▁ ▁See ▁also ▁Germ ani ▁c is r hen