Linked from
The 10 pages that link to Bayezid I, each with the reason it gives.
Ottoman InterregnumRelated: His defeat left no uncontested authority to succeed him.
Battle of NicopolisRelated: His command of the Ottoman forces shaped the battle and its aftermath.
Battle of AnkaraRelated: His capture ended his rule and left his sons to contest Ottoman power.
Murad IBroader topic: Murad’s son succeeded him immediately after the Battle of Kosovo.