Who came up with the new world order?

We don't know who coined the phrase New World Order. What we do know is that it was popular in political speeches delivered by figures like Woodrow Wilson and Winston Churchill after the periods of historical upheaval in the first half of the twentieth century. As far as the delusionally mythical world domination conspiracy theory, it appears to have risen out of the fictional writings of H.G. Wells and the unsubstantiated rantings of conspiracy theorist William Guy Carr.