Some trace butter to the Mongolians who created the most archaic way of butter-making. The conquests of Asia then diffused the man-modified grease to other ethnic groups where distinct regional styles and methods for crafting it evolved. Allowing for a sizable time-skip, butter now sits comfortably as the exalted keystone in classic French cuisine .
However, long before butter appeared as salted or unsalted in grocery store fridges, they held a little more significance in many cultures worldwide. Regarded as medicinal, magical or sacred, the milk product at one point or another was (and in some places still is ) more cultural symbol than kitchen staple.