After the war the Mandate System began
The Mandate System was established by the League of Nations in 1920, following the end of World War I. Under this system, territories previously held by the defeated Central Powers, mainly in the Middle East and Africa, were placed under the authority of various Western powers as "mandates" to be administered on behalf of the League.
The mandate powers were required to govern these territories according to certain principles, including promoting the well-being and development of the local population and preparing them for self-government. However, in practice, many mandate powers pursued their own interests and neglected the needs of the local populations.
The Mandate System came under criticism for perpetuating colonialism and imperialism, as well as for failing to adequately prepare the mandated territories for self-government. It was eventually replaced by the United Nations Trusteeship System after World War II.
Overall, the Mandate System played a significant role in shaping the political landscape of the Middle East and Africa in the 20th century, with lasting implications for the region's development and conflicts.