British GIbraltar was created in 1713.
Yes
By the Treaty of Utrecht in 1713
Spain
Gibraltar is the British Overseas Territory located at the southern tip of the Spanish mainland. It has been a British territory since the Treaty of Utrecht in 1713.
Gibraltar is a British Overseas Territory. It was ceded to Britain under the Terms of the Treaty of Utrecht in 1713 at the end of the war of Spanish succession. Under this treaty Spain lost most of her European empire.
Gibraltar is a British possession.
The United Kingdom. However, there is a dispute with Spain that sovereignty should be theirs. The people of Gibraltar voted in 2002 to reject Spain's rule. Since 2006, Gibraltar has governed its own affairs, though some powers, such as defence and foreign relations, remain under UK responsibility. Gibraltar remains a British overseas dependent territory.
The "rock" you inquired about is the British self governing territory of Gibraltar. Spain ceded the territory to Britain with the Treaty Of Utrecht in 1713.
Gibraltar guards the western entrance to the Mediterranean Sea so was militarily essential for the British Empire to ensure security for their middle east assets.
1713 = 1,713
-1711