Conditions of Jewish immigration authorities fifth.. prosecutions of Nazi Germany and the Jews to rehabilitate and prepare thousands of young Jewish pioneer in several European countries for immigration to Palestine

1 - prosecutions Nazi authorities (in the era of German leader Adolf Hitler) to the Jews of Germany led to the abandoned tens of thousands of Jews to Palestine, and others. 

2 - development and the significant progress in the solution of the Jewish Palestine by the media, especially the arrival of large numbers of them to the steps of the key devices in the administrative time of the British Mandate over Palestine. 

4 - Rehabilitation and prepare thousands of young Jewish pioneer in several European countries for immigration to Palestine.