Zionism is an international movement that began with the goal of establishing a Jewish national or religious community in the historic region of Palestine. Over time, it evolved to support the modern state of Israel.
The term "Zionism" was defined in this sense as early as 1890.
"Zionism." Merriam-Webster.com Dictionary, Merriam-Webster.
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Author's summary: Zionism originated as a global effort to create a Jewish homeland in Palestine and now supports the state of Israel as its modern realization.