Why did Palestine lose control of their land after World War 1?

After World War I, Palestine lost control of its land primarily due to the British mandate established by the League of Nations, which granted Britain administrative control over the region. This shift was influenced by the Balfour Declaration of 1917, in which Britain expressed support for a "national home for the Jewish people" in Palestine. The subsequent influx of Jewish immigrants and rising tensions between Jewish and Arab communities further complicated the situation, ultimately leading to the displacement of Palestinians and the loss of their land.