King Jeroboam did many other things. He fought wars and continued to rule the people. All the things he did are written in the book The History of the Kings of Israel.
Hazael won the land east of the Jordan River—all the land of Gilead, including the land that belonged to the family groups of Gad, Reuben, and Manasseh. Hazael won all the land from Aroer by the Arnon Valley to Gilead and Bashan.