Original: In 1485, by the Leipziger division, the brothers split the Wettin possessions, with Ernest receiving northern Meissen, southern Thuringia, and Wittenberg, and Albert receiving northern Thuringia and southern Meissen.
Simplified: Because he was the older, Ernest became Elector of Saxony, but the brothers shared ruling the lands until 1485. Then Ernest took northern MeiÃ en, southern Thuringia, and Wittenberg, with Albert receiving northern Thuringia and southern MeiÃ en