Is it true that the Gibraltar Strait used to be territory belonging to the British Empire?

True

Explanation:

Gibraltar was 'the only British colony which was part of the mainland of Europe; it was a tiny peninsula on the southern tip of Spain.

Gibraltar has remained under British control ever since, in spite of various attempts to take it back, including an unsuccessful siege by Spain that lasted for nearly four years until 1783.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

answer; i do believe that the (14th)fourteenth amendment is the correct answer