Study the graph of the Jewish population in Palestine through 1945.

A bar graph titled Jewish Residents in Palestine from 1880 to 1945. The x-axis is labeled Year with years 1880, 1900, 1914, and 1945. The y-axis is labeled Jewish Residents in thousands from 0 to 700. 1880, 1900, and 1914 are under 100,000. 1945 is at 600,000.

Which event had a direct impact on the sizable increase of Jewish residents in Palestine from 1914 to 1945?

the Holocaust
the Arab-Israeli War
the Suez-Canal Crisis
the fall of the Ottoman Empire