 After the conquests of Julius Caesar during the Gallic Wars from 58 to 51 BC, it was incorporated into the Roman province of Germania Inferior.Upon the invasion of Germanic Franks from the East during the Migration Period in the 5th century, the Luxembourg region became part of Francia and the Carolingian Empire.In 843, Luxembourg became part of Middle Francia (Treaty of Verdun), then Lotharingia in 855 (Treaty of Prüm) and, finally, of Upper Lorraine in 959.