The peaceful relationship between the Roman Empire and Decebalus's realm came to an end after Emperor Trajan ascended the throne in 98. He waged two wars against the Dacian king in the first decade of the 2nd century. After Trajan's First Dacian War, which lasted from 101 to 102, Decebalus was forced to approve of the stationement of Roman garrisons in Dacian territory, for instance at Drobeta, Romula and Tibiscum. During the Second Dacian War, the Romans annihilated the Dacian kingdom. Its core territoriesBanat, Oltenia and Transylvaniawere transformed into a new Roman province named Dacia in 106. The Romans also occupied Muntenia and the southern parts of Moldavia, which were annexed to the province of Moesia, but they withdrew from these territories in 119.