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This content was originally written in Turkish for children and is automatically translated into English using artificial intelligence.

Interregnum Period

Last Updated: 01.12.2025

During the most intense succession struggles in the Ottoman Empire, brothers competed against each other, leaving the future of the state uncertain. This difficult and complex period is known as the Interregnum.

Interregnum

The Interregnum was a difficult period that began after Ottoman Sultan Yıldırım Bayezid was defeated and captured by Timur at the Battle of Ankara in 1402 and lasted approximately eleven years. During this time, a fierce struggle erupted among Bayezid’s sons for the Ottoman throne. State administration temporarily weakened, and Ottoman territories fragmented.

What Is the Interregnum?

The term “Fetret” means a gap or period of uncertainty. The Interregnum refers to the time in Ottoman history when there was no reigning sultan and administrative chaos prevailed. During this period, four brothers each sought to establish dominance in their respective regions, leading to a war over the throne.

The Brothers’ Struggle

Yıldırım Bayezid’s four sons divided the Ottoman territories among themselves:

  • Süleyman Çelebi established his center in Edirne in Rumelia.
  • İsa Çelebi gained power around Bursa in Anatolia.
  • Musa Çelebi fought across Rumelia and its surroundings.
  • Mehmet Çelebi made Amasya his center in eastern Anatolia.

These brothers waged war against each other in their attempts to control the state. The struggle lasted approximately eleven years.

The End and Significance of the Interregnum

In 1413, Mehmet Çelebi defeated his brothers and became the sole ruler of the Ottoman throne. The state was reunified and strengthened once again. The Interregnum stands as a significant example in Ottoman history of the instability and succession conflicts that can arise in governance.

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INSPIRATION NOTE FOR CURIOUS KIDS!

Life can sometimes be filled with challenges, just like the Interregnum Period. But remember, working together, being patient, and making the right decisions always puts things back on track. When you have disagreements with your friends, try staying calm and seeking solutions. That way, you can become a strong team!

Who Wrote?
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AuthorSıla KayacikDecember 1, 2025
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The Interregnum Period began after Ottoman Sultan Yıldırım Bayezid’s defeat in the Battle of Ankara in 1402. A struggle for the throne erupted among Bayezid’s four sons, and Ottoman territories were divided. This period of chaos lasted approximately eleven years. Eventually, Mehmet Çelebi defeated his brothers, reunified the state, and strengthened the Ottoman Empire. The Interregnum Period is a significant and challenging era in Ottoman history marked by political instability.

Bibliographies

Başar, Fahameddin. “Fetret Devri.” Türkiye Diyanet Vakfı İslâm Ansiklopedisi, 1995. Accessed August 6, 2025. https://islamansiklopedisi.org.tr/fetret-devri

“Fetret Devri Nedir?” DersTarih.com, May 22, 2020. Accessed August 6, 2025. https://derstarih.com/fetret-devri

Kara, Tuğba. “Fetret Devri’nde Osmanlı (1402-1413).” Ondokuz Mayıs Üniversitesi. Accessed August 6, 2025. https://avys.omu.edu.tr/storage/app/public/tugba.kara/145429/FETRET_DEVRINDE_OSMANLI_1402-1413_FASILA.pdf

Ministry of National Education EBA History 10th Grade Textbook. Accessed August 6, 2025. https://ogmmateryal.eba.gov.tr/panel/upload/etkilesimli/kitap/tarih/10/unite2/files/basic-html/page24.html

TÜBİTAK Bilim and Technology Encyclopedia. "Fetret Devri." Accessed August 6, 2025. https://ansiklopedi.tubitak.gov.tr/ansiklopedi/fetret_devri

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