XL] THE RACES OF THE DANUBE. 221 



perhaps, not generally remembered that the greatest 

 warrior and one of the most illustrious emperors of 

 this part of the Roman world were of Slavic origin. 

 The vernacular name of which Justinian is the Latin 

 translation was Upravda, or " the Upright ; " and his 

 invincible general Belisarius was a Dardanian Slav 

 named Beli-czar, or " the White Prince." Within less 

 than a century after this white prince had driven the 

 Goths from Itary, the able emperor Heraclius, con- 

 tending on the one hand against the Persians while 

 menaced on the other by the barbaric Avars, invited 

 two Slavic tribes from beyond the Danube to aid in 

 expelling the latter invaders. These tribes were the 

 Croats and Serbs, and they have remained ever since 

 in the lands which were then granted them in reward 

 of their military services. 



One reason, and perhaps the chief one why the 

 invading Germans and Slavs so readily became sub- 

 jects of the Roman Empire is to be found in the fact 

 that they were settled agricultural races and not 

 wandering nomads. It may seem odd to speak of 

 races as " settled " who moved about so extensively 

 over the face of Europe within the short period of 

 two centuries. But if they wandered, it was only 

 because they were driven by enemies in the rear too 

 strong or too numerous for them to overcome, not 



