Answer:
The Palestinians claim that there people were living in Palestine for thousands of years, but there is no proof of it. They also claim that their profit Mohammed visited Jerusalem, so its their 3rd holiest city, but there is no proof of that either, and Jerusalem is not mentioned once in their whole holy book, the quran.
The Israeli's claim that they have been living in the land for thousands of years, and that for thousands of years Jerusalem was their capital. There is proof of that.
It's so sad that people are on the Palestinians side, and the Israeli's are the ones with proof to their claims.