Arab immigrations into British Palestine 2
In 1922 a census of Palestine was carried out by the authorities of the British Mandate of Palestine.
The Arab population of Palestine doubled during the British Mandate era, from 670,000 in 1922 to over 1.2 million in 1948.
Arabs immigrated to Mandatory Palestine from neighboring lands between 1919 and 1939 attracted by the improving agricultural conditions and growing job opportunities, most of them created by the Jews.
The 1931 census of Palestine considered the question of illegal immigration since the previous census in 1922. Unrecorded immigration during that period included both Jews and Arabs.

How many Palestinians are called El-Masri? From Egypt.
The Nusaybah clan came from Medina.
Tamimi, one of the largest Saudi Arabian area tribes.
The Husaynis migrated to Jerusalem in the 12th century after Saladin drove out the Crusaders.
The Nashashibis are reportedly of Kurdish, Turkmen or Arab origin.
Khalidi, originally from Iraq/Saudi area, ie. Bani Khalid tribe.
Khoury, predominant in Lebanon.
Other names such as al-Djazair (the Algerian), el-Mughrabi (the Moroccan), al-Yamani (the Yemenite) and even al-Afghani are so common among those claiming to be