Gibraltar Independence Movement Poster #1

This is my first poster for the future of Gibraltar as an independent city-state. Singapore has been called the "Gibraltar of the East" and Luxembourg has been called the "Gibraltar of the North", both which today became independent countries. Why won't Gibraltar become a city-state? Is it just because our ancestors were Spaniards, Englishmen and Muslims? Is it just because we became British since the Treaty of Utrecht or Spanish during the Middle Ages? What/Why else? Independence for Gibraltar, please!