What was the reason for the first Arab-Israeli war?

The first Arab-Israeli war, which erupted in 1948, was primarily triggered by the United Nations' proposal to partition Palestine into separate Jewish and Arab states. This plan was accepted by Jewish leaders but rejected by Arab leaders, leading to escalating tensions. Following the declaration of the State of Israel on May 14, 1948, neighboring Arab states invaded, aiming to prevent the establishment of a Jewish state and support the Palestinian Arabs. The conflict resulted in significant territorial changes and the displacement of many Palestinians.