Contrary to conventional "wisdom," most Arabs in British Mandate Palestine -- and most of the 320,000 1948 Arab refugees -- were migrant workers and descendants of 1831-1947 Muslim immigrants from across the Arab world. At the time, Britain enticed Arab immigration and blocked Jewish immigration.
Thus, between 1880 and 1919, Haifa's Arab population surged from 6,000 to 80,000, mostly due to migrant workers. The eruption of World War II accelerated the demand for Arab manpower by the British Mandate's military and its civilian authorities.
Moreover, Arab migrant workers were imported by the Ottoman Empire, and then by the British Mandate, to work on major civilian and military infrastructure projects. Legal and illegal Arab migrants were also attracted by economic growth generated by the Jewish community starting in 1882.
According to a 1937 report by the British Peel Commission (featured in the ground-breaking book "Palestine Betrayed" by Professor Efraim Karsh), "during 1922 through 1931, the increase of Arab population in the mixed-towns of Haifa, Jaffa and Jerusalem was 86%, 62% and 37% respectively, while in purely Arab towns such as Nablus and Hebron it was only 7% and a decrease of 2% in Gaza."
Irrespective of occasional Arab emigration from British Mandate Palestine -- due to intra-Arab terrorism, which has been an endemic feature in the Middle East -- the substantial wave of Arab immigration between 1831 and 1947 triggered dramatic growth of the Arab populations in Jaffa (17 times), Haifa (12 times) and Ramla (5 times).
According to Joan Peters' momentous book "From Time Immemorial": "The 1931 census [documented] at least 23 different languages in use by Muslims plus an additional 28 in use by Christian Arabs -- a total of 51 languages. The non-Jews in Palestine listed as their birthplaces at least 24 different countries."
In 1917, the "Arab" population of Jaffa included at least 25 nationalities, mostly Egyptians, but also Syrians, Yemenites, Persians, Afghanis, Indians and Baluchis. The British Palestine Exploration Fund documented a proliferation of Egyptian neighborhoods in the Jaffa area: Abu Kabir, Sumeil, Sheikh Munis, Salame, Fejja, etc. Hundreds of Egyptian families also settled in the inland, in Arara, Kafr Qasim, Tayibe and Qalansawe.
The 1831-1840 conquest of the land of Israel by Egypt's Mohammed Ali was solidified by a flow of Egyptian and Sudanese migrants settling between Gaza in the south, Tulkarem in the center and the Hula Valley in the north. They followed in the footsteps of thousands of Egyptian draft dodgers who fled Egypt before 1831 and settled in Acre.
In 1865, the British traveler H.B. Tristram, in "The Land of Israel: A Journal of Travels in Palestine," documented Egyptian migrants in the Beit Shean Valley, Acre, Hadera, Netanya and Jaffa.
According to the August 12, 1934 issue of the Syrian daily La Syrie, "30,000-36,000 Syrian migrants, from the Hauran region, entered Palestine during the last few months alone." The role model of Hamas terrorism, Izzedine al-Qassam, who terrorized Jews in British Mandate Palestine, was Syrian, as was Fawzi al-Qawuqji, the chief Arab terrorist in British Mandate Palestine during the 1930s and 1940s.
Libyan migrants settled in Gedera, south of Tel Aviv. Algerian refugees escaped the French conquest of 1830 and settled in Safed alongside Syrians and Jordanian Bedouin in Tiberias. Circassian refugees, fleeing Russian oppression (1878) and Muslims from Bosnia, Turkmenistan, and Yemen (1908) further diversified the Arab demography west of the Jordan River.
This unusual Arab/Muslim demographic diversity is evidenced by popular Israeli Arab family names, which are a derivative of their countries of origin: Al-Masri (Egypt), Al-Obeidi (Sudan), Al-Lubnani (Lebanon), Halabi (Syria), Al-Mughrabi (Morocco), Al-Djazair (Algeria), Al-Yamani (Yemen), Al-Afghani (Afghanistan), Al-Hindi (India), Al-Hijazi (Saudi Arabia), Al-Baghdadi (Iraq), Bushnak (Bosnia), Khamis (Bahrain), Turki (Turkey), etc.
Aryeh Avneri, a pioneering historian of Arab and Jewish migration, estimated that in 1554 there were 205,000 Muslims, Christians and Jews in Palestine, then 275,000 in 1800 and an unusual surge to 532,000 in 1890, resulting from accelerated Arab immigration.
In fact, Mark Twain wrote in 1869: "Of all the lands there are for dismal scenery, Palestine must be the prince. ... The hills are barren. ... The valleys are unsightly deserts. ... Palestine is desolate and unlovely."
Thus, contrary to the myth of the 1948 Arab refugees -- aiming to delegitimize Israel -- Arabs have not been in the land of Israel from time immemorial; no Palestinian people was ever robbed of its land; there is no basis for an Arab "claim of return"; and most of the 320,000 Arab refugees -- who were created by the 1948 Arab invasion of Israel and their own collaboration with the invasion -- were recent immigrants and foreign workers (from neighboring Arab countries) in the land of Israel.