Hmm lets see language contribution to English as we know it would look something like (only including major contributors):
Over 4000 years ago:
Ancient Neolithic Languages (can only guess what remains if anything)
4000BCE - 50AD
Celtic Language
50AD - 400AD
Celtic/Roman Latin
400AD - 1066AD
Celtic/Church Latin/Various Germanic Tongues spoken by invading german tribes
1067AD - 1776AD
Celtic/Latin/Germanic/French/Greek
1776+
Local contributions from the commonwealth and former colonies including but not limited to: Canada, USA, South Africa, Australia, New Zealand etc...
End result one of the most flexible languages in existence and as a result the most universally accepted language for business, trade and diplomacy.