What is the history of English language?

English Is a very diverse language, it's base is Germanic but has gradually changed over the century's. The most influential changes were brought about by the Roman's who Invaded Britain as well as the french, who took control over the country with the the victory at Hastings in 1066. English also has word's stemming from Norse, Arabic, and Greek.

http://www.wordorigins.org/histeng.htm