Rome was therefore forced to contend by around 340 BC against both Samnite incursions into their territory and, simultaneously, in a bitter war against their former allies. Rome bested the Latins in the Battle of Vesuvius and again in the Battle of Trifanum, after which the Latin cities were obliged to submit to Roman rule. Perhaps due to Rome's lenient treatment of their defeated foe, the Latins submitted largely amicably to Roman rule for the next 200 years.