In 1947, when Palestinians used to make up 2/3 of Palestine, the UN devised the partition plan deceiving the indigenous people of Palestine, who had opposed the notion to divide their native soil.
The UN assigned 56 per cent of Palestine to the Jews, who by then owned less than six per cent of the land and made up a small minority, while indigenous Palestinians who made up the majority were coerced to confine themselves and accept their land to be reduced to 44 per cent.

In a pathetic attempt to absolve from their sins committed during the Holocaust the West had dismissed vehement Palestinian objections and gave free reign for another genocide to be perpetrated, which has not ceased yet, reaching the 21st century.

The Jewish intention was and has been eversince to own 80 per cent of Palestine and to turn it into a Jewish state.

The ensuring ethnic cleansing process under the Dalet Plan led to the massacre and expelling of some 531 villages with their more than 800.000 inhabitants who were forced to flee their homes (Nakba).

The foundation of the apartheid regime was pawed already in December 1917 by the British Balford Declaration, ascertained in 1918 by the British Mandat and cemented in the Holocaust in Nazi-Germany.

Source:

The Ethnic Cleansing of Palestine 
By Ilan Pappe