This question involves multiple aspects, including international law, history, and politics. In international law, the status and ownership of colonies is a complex issue. According to modern international law, especially the Charter of the United Nations, colonialism and foreign occupation are considered to be violations of the right of states and peoples to self-determination. From a historical perspective, if a region is controlled by an occupying country for a long time, different views may emerge: 1. **Legal perspective**: Many countries and international organizations emphasize that the legitimacy of colonies remains controversial no matter how long they have been occupied. According to international law, the inhabitants of colonies have the right to self-determination and can choose their own political future and governance. 2. **Political perspective**: After a long period of occupation, some countries or regions may develop a new identity, and some people may consider the region to be part of the occupying country, but there is still controversy over this position. 3. **Social perspective**: Long-term occupation may lead to social, cultural and other aspects of integration, but it may also lead to conflict and confrontation. In this case, the feelings and opinions of the residents will also affect the view of the ownership of the land. Therefore, there is no clear answer as to whether a region should be considered to belong to the occupying country after a long period of occupation. It depends on the specific historical context, the interpretation of international law and the wishes of the local residents.