Answer: To give the Jews there own land.
Explanation: People believed that the Jews deserved their own land. This belief is known as Zionism. People were told to vote on weither or not they should have this. The majority of the vote said yes and Israel was born. But, Arabs were living there and disliked this idea and went against it. Arabs showed hatred towards the Jews and a war began. (I tried to make this as simple as possible.)