The Dacian war was intended to follow; but the civil war stepped in before it a second time. It summoned the ruler not to Illyricum, but to the East, and the heavings of the great decisive struggle between Caesar and Antonius reached even to the distant region of the Danube. The people of the Dacians, united and purified by king Burebista (Boerebistas, iv. 305) {iv. 291.}, now under king Cotiso, found itself courted by the two antagonists--Caesar was even accused of having sought the king's daughter in marriage, and having offered to him in turn the hand of his five-year-old daughter Julia. It is easy to understand how the Dacian should, in view of the invasion planned by the father and ushered in by the son with the fortification of Siscia, have attached himself to the side of Antonius; and had he done what people in Rome feared--had he, while Caesar was fighting in the East, penetrated from the north into defenceless Italy; or had Antonius, in accordance with the proposal of the Dacians, sought the decision of the struggle not in Epirus but in Macedonia, and drawn thither the Dacian bands to help him, the fortunes of the war might perhaps have ended otherwise. But neither the one nor the other took place; moreover, at that very time the Dacian state, created by the vigorous hand of Burebista, again went to pieces; internal troubles, perhaps also the attacks from the north by the Germanic Bastarnae and by the Sarmatian tribes that subsequently environed Dacia on all sides, prevented the Dacians from interfering in the Roman civil war, in the decision of which their future also was at stake. Immediately after that war was decided, Caesar set himself to regulate the state of things on the lower Danube. But, partly because the Dacians themselves were no longer so much to be dreaded as formerly, partly because Caesar now ruled no longer merely over Illyricum, but over the whole Graeco-Macedonian peninsula, the latter became the primary basis of the Roman operations. Let us picture to ourselves the peoples, and the relations of the ruling powers, which Augustus found there. [Sidenote: Macedonian frontier.]