The Emergence of Europe: The Fall of the Roman Empire, the Rise of the Franks, and the Creation of Charlemagne's Empire-Introduction

A series of civil wars and repeated invasions by Germanic tribes caused the collapse of the Western Roman Empire. Following the end of imperial authority, several Germanic tribes struggled against each other for control of territory. The Franks became the dominant power in Gaul, but Greater Frankia repeatedly broke apart during wars between rival claimants for the throne. Finally, Charlemagne united the Franks, and greatly expanded the size of the kingdom. However, his grandsons proved unwilling to share the empire, and divided it in 843, laying the foundations for France and Germany.