What did the merchants who came to Babylon from the north sell?

The beautiful, magnificent city of Babylon flourished in the 6th century BC, while King Nebuchadnezzar II ruled. He ruled over the lands of Akkad and Sumer. The city of Babylon at that time became the largest commercial and cultural center. The Euphrates River, which flows through the city, was a major trade artery along which ships sailed from the north to Babylon. The merchants-northerners traded in various goods, they had copper, meat, building materials for sale, merchants brought back wheat, barley and various fruits.