The document provides an overview of the history and development of the English language from its origins to modern times. It discusses the three main periods of English: Old English from 450-1100 AD, Middle English from 1100-1500 AD, and Modern English from 1500 onwards. It describes the various influences on Old English, including the Celtic, Latin, Scandinavian (Viking), and Norman French languages due to successive invasions and settlements in Britain over centuries. The English language evolved from its Germanic roots through continual contact and borrowing of vocabulary from other languages it encountered.