塞维鲁王朝  (April 4, 186 AD～April 8, 217 AD)

Start End Reign 211 AD 217 AD 

　　* Royal Decree issued by Ann Alto, Ninu Si (Constitutio Antoniniana), all of the Roman Empire was born a free man will be given full Roman citizenship, to provide revenue to increase the number of residents with the service.
　　Accession to the throne and rule
　　In the year AD 213, Caracalla visited the Rhine and the German line of defense against the Great Wall (Limes Germanicus) about six months, he would only ditch and the fence of the local stone and brick into the defense line composed. Yin Tai four times the line of defense, stepped up some great success.
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　　The legendary British king