The Dacians were an Indo-European people, very close or part of the Thracians, and were the ancient inhabitants of Dacia (located in the area in and around the Carpathian Mountains - present day Romania). They spoke the Dacian language, believed to have been closely related to Thracian. The Dacians were defeated by the Romans in 105, and part of the Roman Empire for 350 years. After this their is much dispute, but it seems that some Dacians went to Rome, and that some stayed in Dacia.