The Ottoman Empire disintegrated and was partitioned after its defeat in World War I. The empire had already been in decline for centuries, and its dissolution ultimately led to the establishment of the modern Republic of Turkey in 1923 and the creation of other new states in the Middle East. The dissolution of the Ottoman Empire was a complex process that involved a combination of factors, including military defeats, economic challenges, internal unrest, and the impact of World War I. The empires decline was also influenced by the loss of territory, corruption, and the inability to sustainably develop its vassal states. The dissolution of the Ottoman Empire marked the end of a significant chapter in history, as it had been one of the most powerful states in the world during the 15th and 16th centuries, encompassing vast territories across southeastern Europe, the Middle East, North Africa, and the Arabian Peninsula.