Jehoshaphat fought many wars, and these wars and his successes are written in the book of the history of the kings of Judah.
Everything else King Solomon did, and the wisdom he showed, is written in the book of the history of Solomon.
Everything else Jeroboam did is written in the book of the history of the kings of Israel. He fought wars and continued to rule the people,
Everything else King Rehoboam did is written in the book of the history of the kings of Judah.
Jehoshaphat had much wealth and honor, and he made an agreement with King Ahab through marriage.
The other things Jehoshaphat did as king, from the beginning to the end, are written in the records of Jehu son of Hanani, which are in the book of the kings of Israel.