Zionism.
Yes
The Balfour Declaration was the first promise by the British Empire to give the Jewish people a national home in Palestine. It was the first major success of the Zionist Movement and led to increased pressure by Jews to immigrate to the territory and set the foundations of a new Jewish State-to-be. As the Zionists worked to create a Jewish state, the support of one of the world's largest powers, that was soon to take over Palestine, was crucial. This also changed the future trajectory of Israel/Palestine as a region, allowing the seeds of Israel's creation to be sown.
There was no particular issue that caused Zionism as a movement. Theodor Herzl, the founder of the movement, was motivated quite strongly by the Dreyfus Affair in France. Other Zionists were motivated by other rationales or events. The worldwide (Non-Jewish) community finally embraced the Jewish Right to a State after the realization of how extensive the Holocaust was.
Zionists started a movement to establish a Jewish state in Palestine.
The Arabs wanted a unitary independent Arab State to be created called Palestine and would refuse the creation of any Jewish State in the region.
Zionism
ZIONISM, the Jewish Nationalist Movement, led to the creation of the State of Israel in 1948.
In the British Mandate of Palestine.
The United Nations proposed a plan to divide Palestine into a Jewish state and an Arab state.
The Arabs wanted a unitary independent Arab State to be created called Palestine and would refuse the creation of any Jewish State in the region.
The Arabs' rights in Mandatory Palestine were prejudiced by the Zionists who wanted to create a Jewish controlled state.
zionism - "the national movement for the return of the Jewish people to their homeland and the resumption of Jewish sovereignty in the Land of Israel, advocated, from its inception, tangible as well as spiritual aims."