San Marino
landlocked; smallest independent state in Europe after
the Holy See and Monaco; dominated by the Apennines
Sao Tome and Principe
the smallest country in Africa; the two main
islands form part of a chain of extinct volcanoes and both are
fairly mountainous
Saudi Arabia
extensive coastlines on Persian Gulf and Red Sea
provide great leverage on shipping (especially crude oil) through
Persian Gulf and Suez Canal
Senegal
westernmost country on the African continent; The Gambia is
almost an enclave within Senegal
Serbia
controls one of the major land routes from Western Europe to
Turkey and the Near East
Seychelles
41 granitic and about 75 coralline islands
Sierra Leone
rainfall along the coast can reach 495 cm (195 inches)
a year, making it one of the wettest places along coastal, western
Africa
Singapore
focal point for Southeast Asian sea routes
Slovakia
landlocked; most of the country is rugged and mountainous;
the Tatra Mountains in the north are interspersed with many scenic
lakes and valleys
Slovenia
despite its small size, this eastern Alpine country
controls some of Europe's major transit routes