 Complete the following phrase:  Nerva then failed to react with decision; by false promises he was able to return one body of the rebels to slavery, while neglecting to address a more serious outbreak near Heraclea. A troop of 600 soldiers which he finally dispatched to quell this revolt was beaten and slaughtered; the slaves now gained confidence, having won a large supply of armaments and a strong leader, a former slave called Salvius. Following the example of Eunus, the slave-leader of the 