Q: 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.
The Vortsjarv is a large internal lake in this country. Among the 1500 islands controlled by this country are the Muhu archipelago members Saaremaa and Hiiumaa. Viljandi and Tartu are key cities of this country, which is found to the west of Lake (*) Peipus and the east of the Gulf of Riga. Found to the north of Latvia, for 10 points name this Baltic state whose capital is Tallinn.
A:
Social Science