Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This nation's Diogo de Silves discovered the Azores. It split lands with Spain in the Treaty of Tordesillas (tor-day-SEE-yahs). This nation's Henry the Navigator promoted exploration, and its explorers were the first Europeans to round the Cape of Good Hope and sail to India. Those explorers were Bartolomeu Dias and Vasco da Gama. For 10 points, name this country that colonized Brazil.
A:
Social Science