There are a number of reasons why the territory that constitutes the British Mandate of Palestine was chosen as the future Jewish State, but I believe your question is why did Jews want an independent sovereign nation at all.
The idea of a politically sovereign Jewish state is not an alien concept in history. There was an independent Kingdom of Israel and Judah during Biblical times. (There is confirmation of such kingdoms in Egyptian, Assyrian, and Babylonian codices and documents.) Furthermore, there was an independent Jewish state (the Hasmonean Kingdom) after the successful Jewish revolt (chronicled in Hanukkah) until the Roman conquest a century later. In addition, many rulers who occupied the territory noted the prevalence of Jewish inhabitants, such as Persians, Greeks, and Romans and gave them specific religious prescriptions.
In the Modern Age, it is believed that Napoleon would have bequeathed the Jews a State in British Palestine according to a speech he would have delivered if he had won the Battle of Acre (he lost the battle and thus did not give the speech). The real cry for a sovereign Jewish State came from Herzl and other Zionists who were looking for political protection and unity by realizing that Jews were a nation defined by culture, language, and customs just like Poles, Germans, or Italians and like them deserved a place to have political freedoms, economic freedoms, and control of a region of territory.
The nation can eat all the Gummy brears they want.
Nation.
The south wanted to leave the Union because they wanted to become an independent nation. They believed that if they had an independent nation, they would be able to keep their traditions and ways of life, including the institution of slavery.
An independent new nation, where the british could not pass taxes. He also wanted to be a Sailor.
Not all Jews hold a belief in a Messiah, but those who do believe he will lead the Jews back to Israel and re-establish the Ancient Temple sacrifices. He will be the next king, and his descendents will be the future kings of Israel.
A free and independent nation, conceived in Liberty and dedicated to the Principle that all men are created equal.
The Zionists wanted to establish a Jewish national state in the Middle East because the Jews given their smaller population, could not pose a significant threat.
"Free and Independent States, they have full Power to levy War, conclude Peace, contract Alliances, establish Commerce, and to do all other Acts and Things which Independent States may of right do"
His ancestor was a secessionist in the Civil War.
What did the french want to establish in the americas
The slave holding states in the Southern US wanted to become an independent nation. By doing this, Southerners believed that they could protect their way of life which included being a nation where slavery was an "accepted" institution.
Belgium is independent.