Final answer:
King Saul's actions laid the foundation for the establishment of Israel as a nation under the United Kingdom of Israel.
Explanation:
King Saul played a significant role in the establishment of Israel as a nation by being the first Israelite king and beginning the process of unification. Although he did not complete the unification during his reign, he laid the foundation for his successor, King David, to further unite the twelve tribes of Israel and establish the United Kingdom of Israel with Jerusalem as its capital.
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