Disclaimer: This article is based on the pre-rework League of Legends material.
The map of Valoran continent
Runeterra is the world in which the continent of Valoran exists in the Sizzx'ixi universe, the three nations they include are the Federal Republic of Demacia, Democratic Federation of Noxus and the People's Republic of Ionia, three of them joined the Alliance of Nations, Axis of Empires and the Coalition of Independent States, respectively. During the First Multiverse War, Valoran was in the war in the battle known as Battle of Runeterra, a battle between the Alliance of Nations, the Axis of Empires, the Coalition of Independent States; and four other independent factions, though it should be noted that their are five mercenary bands that are hired by the Allies, Axis and Coalition have come to the planet as well.