How did a jarl become a king?

In Viking society, a jarl, or noble leader, could become a king through various means, such as demonstrating military success, gaining the loyalty of warriors, or inheriting power from a predecessor. Often, a jarl would unify smaller tribes or clans under his leadership, leveraging alliances and strategic marriages to strengthen his claim. Additionally, the support of influential local chieftains and recognition from other powerful figures were crucial in establishing a jarl as a king. Over time, this consolidation of power and influence allowed a jarl to ascend to kingship.