"medieval island" and its potential to cause conflict between countries.

 "medieval island" and its potential to cause conflict between countries.  However, if the intent is to inquire about the ownership of a small island on Lake Victoria, the following information might be relevant:

The ownership of small territories, such as islands, is often determined by historical treaties, agreements, and international law. Lake Victoria is the largest lake in Africa and is shared by three countries: Kenya, Uganda, and Tanzania. The borders of these countries were drawn by colonial powers and may not always align with natural geographical features, such as islands.

If an island is situated in a way that its sovereignty is in question, the United Nations Convention on the Law of the Sea (UNCLOS) can provide guidance. According to UNCLOS, the territorial waters of a country extend twelve nautical miles from its coastline. If an island is within these territorial waters, it is generally considered part of the coastal state's territory. However, if the island is situated in a way that it straddles the territorial waters of two or more states, the Exclusive Economic Zone (EEZ) can become contentious. The EEZ extends two hundred nautical miles from a country's coastline and provides that state with rights to exploit the natural resources within that area.

The economic value of the resources surrounding the island, such as fish stocks, can indeed lead to tension and even conflict between neighboring states. The Nile Perch, a large fish found in Lake Victoria, is a significant source of income for the region due to its high market value in international markets. The increasing demand for Nile Perch has led to overfishing, which can exacerbate territorial disputes.

To resolve such conflicts, countries often engage in diplomatic negotiations, refer to historical records and agreements, and may even resort to international arbitration. Scientific surveys can also be conducted to determine the exact location of the border in the lake and its extension to the island in question.

In summary, the ownership of a small island like the "medieval island" mentioned in the text would depend on various factors, including its location relative to the territorial waters and EEZs of Kenya and Uganda, the presence of natural resources, and the diplomatic relations between the two countries. A peaceful resolution to such a dispute would ideally involve mutual understanding, respect for international law, and collaboration for the sustainable management of shared natural resources.