Simplify the following text for a Grade 6 native English-speaking person.
Original: Zionism does not have a uniform ideology , but has evolved in a dialogue among a plethora of ideologies : General Zionism , Religious Zionism , Labor Zionism , Revisionist Zionism , Green Zionism , etc. . However , the common denominator among all Zionists is the claim to Eretz Israel as the national homeland of the Jews and as the legitimate focus for the Jewish national self-determination ( as shown , among others , by Gideon Shimoni ) .
Simplified: Zionism is the belief that there should be a Jewish country in Israel .