Ten Lost Tribes Monarchy (also called the Kingdom of Israel), which came into existence in about the 930s BCE after the northern Tribes of Israel rejected Solomon's son Rehoboam as their king. Nine landed tribes formed the Northern Kingdom: the tribes of Reuben, Issachar, Zebulun, Dan, Naphtali, Gad, Asher, Ephraim, and Manasseh. In addition, some members of the Tribe of Levi, who had no land allocation, were found in the Northern Kingdom. The Tribes of Judah and Benjamin remained loyal to Rehoboam, and formed the Kingdom of Judah (or the Southern Kingdom). Members of Levi and the remnant of Simeon were also found
Kings of Israel and Judah kingdom was a separate development. There are some dissenters to this view. The Bible describes a succession of kings of a united kingdom, and then of divided kingdoms. According to the Bible, the Tribes of Israel lived as a confederation under "ad hoc" charismatic leaders called judges. In around 1020 BCE, under extreme threat from foreign peoples, the tribes united to form the first United Kingdom of Israel. Samuel anointed Saul from the Tribe of Benjamin as the first king. After Rehoboam reigned three years, the United Kingdom of Israel was divided in two – the northern Kingdom of Israel