Paraguay is a landlocked country located between Argentina, Bolivia, and Brazil. It is divided into two regions by the Paraguay River - Occidental Paraguay or Gran Chaco in the west, which has a tropical climate, and Oriental Paraguay or Eastern Paraguay in the east, which has a subtropical climate. The majority of Paraguay's population lives in the eastern region, where most people are mestizos of mixed European and indigenous ancestry. The capital and largest city of Paraguay is Asunción. Roman Catholicism is the dominant religion.