The Third Aliyah
The upheaval of World War One, the Balfour Declaration of 1917, and the bloody Russian Revolution drove tens of thousands of Jews to Palestine in the third historic wave of immigration. Where most of the immigrants from the First and Second Aliyah waves ended up leaving, thanks to the hardship of agricultural life, the Third Aliyah immigrants, mostly young, had been trained in their native countries. So they arrived in Palestine ready to build. The influx of the Third Aliyah had two major impacts: it angered the Arabs, since more Jews were coming into Palestine; and it titled the Yishuv’s demographic more strongly to the socialist left.