Sao Tome and Principe is an island nation located in the Gulf of Guinea off the western coast of Central Africa. It is composed of two main islands, Sao Tome and Principe, and several smaller islands. The country is a Portuguese-speaking nation and its official language is Portuguese. The capital city is Sao Tome and the population is estimated to be around 200, 000 people. Sao Tome and Principe is known for its natural beauty, with lush rainforests, white sand beaches, and a variety of wildlife. The economy is largely based on agriculture and fishing, and the country is a major producer of cocoa. Tourism is also an important industry, with visitors coming to experience the unique culture and stunning scenery. The answer to the crossword puzzle is SAO, the three-letter abbreviation for Sao Tome and Principe.