 Complete the following phrase:  In 486, Clovis I, leader of the Salian Franks, defeated Syagrius at Soissons and subsequently united most of northern and central Gaul under his rule. Clovis then recorded a succession of victories against other Germanic tribes such as the Alamanni at Tolbiac. In 496, pagan Clovis adopted Catholicism. This gave him greater legitimacy and power over his Christian subjects and granted him clerical support against the Arian Visigoths. He defeated Alaric II at 