Please complete your 30 second research algorithm and give us all an answer as to what caused the "barbaric" change in 1900 with reputable sources etc.
So you post a link to ONLY the 20th Century!
History goes back just a little bit further for your information!
BTW No's 4 and 10 in your link are non white!
I believe that you are the one who has NOT studied history!
What has the place of origin, sex, ethnicity etc of any inventor or discoverer be of any consideration to anyone?
Yet again I ask "Where is the confused/sad button"!
Can someone please translate the above!
PS; I know my comment above is a repeat of a previous post by me but what I am quoting is just referring to yet more gibberish by the poster "internationalism" in his/her response!