Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic Ocean. It consists of three main islands: Saint Helena, known for its historical significance as the exile location of Napoleon Bonaparte; Ascension Island, which is a volcanic island with a military base; and Tristan da Cunha, the most remote inhabited archipelago in the world. The territory has a small population, primarily residing on Saint Helena and Tristan da Cunha. The islands are known for their unique biodiversity and rich marine life, attracting researchers and nature enthusiasts. The economy is mainly based on fishing, agriculture, and tourism.