For what are you accounting? Most mathematics has been known about for 100+ years... IMO, This comment was a reason for you to hear yourself "talk" or alternatively for you to take a (weak) shot at the U.S.
Your 100 year cut-off point is entirely arbitrary and chosen only because it supports your arguments.
[1] http://en.wikipedia.org/wiki/History_of_mathematics
[2] http://en.wikipedia.org/wiki/Origin_of_language
[3] http://en.wikipedia.org/wiki/History_of_writing
[4] http://en.wikipedia.org/wiki/Printing_press
[5] http://en.wikipedia.org/wiki/History_of_scientific_method