The only way to create black by mixing colors is to combine the primary colors together. To do this with two colors, one may use one of three combinations, hues of yellow and purple, hues of orange and blue or hues of green and red.
I would say the Sumerians the developed a lot of modern tech and ideas for the time include sail boats, astronomy, codes of law, a numerical system, advanced water systems and most importantly a written language. The akkadian in general took these innovations from the Sumerians and used them as their own. The akkadians did eventually form the 1st "empire," which lead to the extinguishing of Sumerian culture, but most or the of their technologically was taken from the sumerians. So I would say deff the Sumerians. The akkadians simply stole and/or built on Sumerian tech
Answer:
Because they are the different components or elements that create a pece of artwork
