in the history indicated that potatoes were frying up in the Meuse valley between Dinant and Liège, in Belgium. when the river becomes frozen thick up ice it makes them can't to find to get fish for their meals. so in these time, they would cut up potatoes in long thin slices, and fry instead fish. whatever history will be coming, it was the French who seem to be the ones that spread fries to America and Britain and become a popular fast food in America.