Whenever these soldiers went to war against their enemies, they prayed to God and trusted him to help. That's why the tribes of Reuben, Gad, and East Manasseh defeated the Hagrites and their allies.
Many of the Hagrites died in battle, because God was fighting this battle against them. The tribes of Reuben, Gad, and East Manasseh lived in that territory until they were taken as prisoners to Assyria.
No one will buy their cinnamon, spices, incense, myrrh, frankincense, wine, olive oil, fine flour, wheat, cattle, sheep, horses, chariots, slaves, and other humans.