3 Nephi 7:3
1830 Edition
And every tribe did appoint a Chief, or a leader over them; and thus they became tribes, and leaders of tribes.
Changes
And every tribe did appoint a Cchief, or a leader over them; and thus they became tribes, and leaders of tribes.
Simple English
Each tribe chose a chief or a leader. This is how they became tribes with leaders.
Paraphrase
Every tribe appointed its own chief or leader. That’s how they organized themselves—into separate tribes with separate leaders.