There is no such country. As such, there is no such thing as a Palestinian. What there are are Arabs living on land that used to be part of the British Protectorate of Palestine that encompassed what is now Jordan, Israel, the West Bank and Gaza. Palestine was segmented after the First World War and subsequently, an Arab state was created. Today that Arab state is known as Jordan. What the world refers to as Palestinians are those Arabs left in the non-Jordan, non-Israel parts of what used to be British Palestine.