 Complete the following phrase:  Arnulf I of Bavaria maintained an alliance with the Hungarians until his death in 899. During their campaigns following their conquest of the Carpathian Basin the Hungarians stopped neither at the river Morava nor at the western border of Pannonia, but penetrated deeply into the territory of Bavaria as far as the river Enns. During the battle of Pressburg on July 4, 907, a Bavarian army was defeated by the Hungarians. The 