How many Palestinians left Palestine before the Israel Arab War of 1948 ?
Between 300-400 thousand Palestinians were ethnically cleansed by Zionist gangs before any war started…. After the war, main reason was is what happened to Palestinians, another 350–400 thousand Palestinians were ethnically cleansed.
Source: Ilan Pappe, Rashid khalidi, Joseph massad, Tom segev, Avi shlaim, and Benny Morris.
These are Israeli and American historians.