1. The territorial sovereignty of the State. 1.1. Concept, characters, and classes. 1.2. Territorial acquisition titles. a) Original titles. i. Occupation. ii. The accession or contiguity. b) The derivative titles. i. Conquest. ii. Cession. iii. The acquisitive prescription or usucapio. c) The principle uti possidetis iuris. 1.3. Borders and Neighbourhood relations. 1.4. Special territorial arrangements. a) The condominium. b) Warlike occupation. c) foreign military bases. d) colonial territories. e) international administration. 2. Competence of States over marine areas. 2.1. The 1982 United Nations Convention on the Law of the Sea (UNCLOS). 2.2. Spaces under the jurisdiction of the coastal State. i. Inland Waters. ii. The Territorial Sea. iii. The Contiguous Zone. iv. The Archipelagic Waters. v. The Exclusive Economic Zone. vi. The Continental Shelf. 2.3. Spaces located outside the limits of national jurisdiction. i. The High Seas. ii. The International Seabed and Ocean Floor Area. 3. Competence of States over airspace. (a) National airspace. (b) International airspace.