Here is the text of what Corbyn said:
I was brought up at school being told, um, that Israel was founded on a piece of empty space, and that they managed to make the desert bloom, and they built things when there was nothing there before. Anybody that studies the history of the region would know, at the end of the Second World War – 1945 to 1948 period – Palestine had media, had industry, had education, had universities, had a relatively high standard of living for the whole region, and was a coherent society and a coherent state. It was a denigration of that which enabled Western opinion to be, um, put together in support of Israel.Corbyn claims that the infrastructure already in place around 1945 to 1948 proves that Jews contributed little to the land.
But why 1945 to 1948?