After the fall of the Roman Empire, Lombards settled in Carniola, followed by Slavs around the 6th century AD. As a part of the Holy Roman Empire, the area was successively ruled by Bavarian, Frankish and local nobility, and eventually by the Austrian Habsburgs almost continuously from 1335 to 1918, though beset by many raids from the Ottomans and rebellions by local residents against Habsburg rule from the 15th to the 17th centuries. From about 900 AD until the 20th century, Carniola's ruling classes and urban areas spoke German while the peasantry often spoke Slovenian.