Original sentence: Gibraltar (), is a British Overseas Territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean.The territory was subsequently ceded to Britain "in perpetuity" under the Treaty of Utrecht in 1713
Edited sentence: Gibraltar (), is a British Overseas Territory and Colony, located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean.In 1963, Gibraltar was included in the UN list of Non-Self-Governing Territories and it is the only colonial territory that remains in Europe in the 21st Century.The fortress and the port was subsequently ceded to Britain "in perpetuity but without territorial jurisdiction" under the Treaty of Utrecht in 1713