English language and sometimes also vocabulary, grammar and spelling—English-speakers from around the world are able to communicate with one another with relative ease. English is an Indo-European language and belongs to the West Germanic group of the Germanic languages. Old English originated from a Germanic tribal and linguistic continuum along the Frisian North Sea coast, whose languages gradually evolved into the Anglic languages on the British Isles, and into the Frisian languages and Low German/Low Saxon on the continent. The Frisian languages, together with which the Anglic languages form the Anglo-Frisian languages, are the closest living relatives of English. Low German/Low Saxon
History of the British Isles invaded and settled by Gaels. The Early medieval period saw a series of invasions of Britain by the Germanic-speaking Saxons, beginning in the 5th century. Anglo-Saxon kingdoms were formed and, through wars with British states, gradually came to cover the territory of present-day England. Around 600, seven principal kingdoms had emerged, beginning the so-called period of the Heptarchy. During that period, the Anglo-Saxon states were Christianised (the conversion of the British ones had begun much earlier). In the 9th century, Vikings from Denmark and Norway conquered most of England. Only the Kingdom of Wessex under Alfred the Great survived and