Yes, the Jews did very well in a preparation phase. They expelled over 50% of the Arab Palestinian population before they even declared independence. Do you have documents that show how many Jews were expelled at the same time?
Factors that contributed to the exodus of the Arab population were direct expulsion by Israeli forces, psychosocial warfare, including terrorism, massacres, crop burning, typhoid epidemics caused by well - poisoning etc. which all occurred well before May 14, 1948. Thew reason why the AL entered the territory was to prevent the collapse of the Palestinians and to avoid more refugees were some of the reasons for the entry of the Arab League in the territory.
