Just saw Jeopardy, where they referenced Israeli currency--shekels. It's the same currency they had 2000 years ago. And Hebrew is the same language they spoke in that land 2000 years ago. They also celebrate the same national holidays that Jesus observed 2000 years ago (like Passover and Hanukkah). Can the so-called Palestinians make the same claim? No, which is why they try to destroy every archeological artifact on the Temple Mount.
There's no such people as the "Palestinians." They came from Jordan and other countries.
The land and people were referred to as Palestine and Palestinian when it was part of the Ottoman empire in the 1800s. As far as I know there were no Jews there yet.
Actually there is a written account of how great an expanse of land the Jews originally owned. You probably have a copy of the book it was written in somewhere in your house, maybe in a closet or a bookshelf. If you don't, you could probably find it in a public library or something.
Unfortunately, that book doesn't have any pictures in it, because they didn't have cameras back then. So I'll post this one...
Biblical Boundaries of the Land of Israel - The Israel Bible