Answer:
I think it will be ivory , ebony and gold
By the time of the Assyrian Empire, Mesopotamia was trading exporting grains, cooking oil, pottery, leather goods, baskets, textiles and jewelry and importing Egyptian gold, Indian ivory and pearls, Anatolian silver, Arabian copper and Persian tin.
Explanation:
Great plains
lots of farming land in plains, provide for family
If I'm not mistaken, (At least I <em>hope</em> I'm not mistaken), that is true.