The Saxons were a group of Germanic tribes that lived in what is now northern Germany and southern Denmark. They began migrating to Britain in the 5th century AD, during the decline of the Roman Empire. The Saxons played a significant role in the formation of early medieval England, contributing to its culture, language, and social structure. In Britain, the Saxons established several kingdoms, including Wessex, Mercia, and Kent. They are known for their agricultural practices, craftsmanship, and the spread of Christianity. The Saxon period laid the foundation for the later development of the English nation and its language, which evolved into Old English.