Question

How did the territory of israel change over time???

Answer 1

I take it you mean modern Israel.
Basically, the territory of Israel increased in a few steps, but otherwise remained stable. The increases were usually connected with military conflicts. An example is  the Little Triangle in nothern Israel, that was incorporated into the country (in exchange for  another region though).

Please note that this is a politically charged question and any responses will be biased.