State responsibility — Acts and omissions of State organs and officials — Decolonization of Western Sahara — Duty of Spain to compensate nationals forced to leave Western Sahara — Conditions for payment of compensation State succession — Respect for private rights — Decolonization of Western Sahara — Madrid Agreement, 1975, between Mauritania, Morocco and Spain — Transfer of administrative responsibilities from Spain to Morocco and Mauritania — Whether Spanish Administration liable for acts occurring during interim period when Administration shared with Morocco and Mauritania 698 Territory — Acquisition of territorial sovereignty — Cession — Decolonization of Western Sahara — Madrid Agreement, 1975 — De facto cession of Western Sahara from Spain to Morocco and Mauritania — The law of Spain