The factors that influence ancient territory on modern territorial sovereignty are complex, and we cannot simply assume that it determines modern territorial sovereignty. First, historical territorial changes and territorial ownership are affected by many factors, including wars, colonization, treaties, political changes, and cultural integration. The territories of many modern countries were formed in a complex historical process, and the ancient territories are not necessarily legally valid. Secondly, modern international law emphasizes state sovereignty and territorial integrity. The borders of many countries are established through international treaties and negotiations, not just relying on historical territories. However, ancient territory may have an impact on modern national identity, national identity, and border disputes in some cases. For example, some countries and nations may claim their territorial rights based on historical origins and traditional cultural claims. In general, the relationship between ancient territory and modern territorial sovereignty is complex, with both historical continuity and the constraints of modern international law and real politics.