Just came across this delightful short video on the history of the English language so thought I'd share:
I'm not sure if the information presented in the video is bang on the money, if not hopefully somebody will correct me. A rough timeline of the evolution of the English language as per the video: the Romans colonised Britain but did not leave behind a lot in terms of language; the Angles and Saxons followed and brought over a lot of words that could be used in day-to-day life; then came William the Conqueror and thousands of Norman words were injected into English; then rose Shakespeare who gave more than 2,000 words and many phrases to the language; the King James Bible then introduced people to many words and phrases from Latin; the colonisation gave the English language newer words; the dictionary standardised them all and yet new words and phrases kept pouring in, courtesy American English, followed by global English.