There were Caucasians in Gansu Province a 1,000 years before there was a Rome.
In fact, one archaeologist believes that Caucasians are from the Gansu Province region.
"The discoveries in the 1980s of the undisturbed 4,000-year-old Beauty of Loulan and the younger 3,000-year-old body of the Charchan Man are legendary in world archaeological circles for the fine state of their preservation and for the wealth of knowledge they bring to modern research."
That’s probably who invented those great knives, the Caucasians of Gansu.