Actually there were settled towns and villages those people lived in.
It IS their land.
Even if they were nomads that still would be the land they inhabited, again, making it theirs.
Even if you can prove (and you can't) that they got there the day before Zionists arrived, they still got there before Zionists arrived.
While that land changed hands between Rome and Iran and Mongolia and Turkey and Great Britain, the Jewish Ashkenazi were over in Europe for nearly 2000 years getting diluted by European Gentile admixture to the point that the Semitic roots of many has been questioned, their Jewish genes that impure.
Incidentally, while most Palestinians are Muslims, many are also Christians, and yes, you guessed it, Jewish.
You may now resume flinging your propaganda at the OP's propaganda so that the truth can remain hidden between both your agenda based lies.