Clovis I was the first king to rule over all the tribes of which ancient people?

Clovis I (466 – 27 November 511) was the first king of the Franks to unite all of the Frankish tribes under one ruler, changing the form of leadership from a group of royal chieftains to rule by a single king and ensuring that the kingship was passed down to his heirs. He is considered to have been the founder of the Merovingian dynasty, which ruled the Frankish kingdom for the next two centuries.

Clovis succeeding his father, Childeric I, as king of the Salian Franks in 481, ruling in an area extending from what is now the southern Netherlands to northern France, then Gallia Belgica (northern Gaul). He took control of a rump state of the Western Roman Empire controlled at the Battle of Soissons, and by the time of his death in either 511 or 513, he had also conquered smaller Frankish kingdoms towards the northeast, the Alemanni to the east, and Visigothic kingdom of Aquitania to the south.