Foreign relations of Estonia originates in the Nordic countries (principally Finland and Sweden), to which Estonia sends 42% of its exports (as compared to 6.5% going to Russia, 8.8% to Latvia, and 4.7% to Lithuania). On the other hand, the Estonian political system, its flat rate of income tax, and its non-welfare-state model distinguish it from the other Nordic states, and indeed from many other European countries. Estonia is a party to 181 international organizations, including the BIS, CBSS, CE, EAPC, EBRD, ECE, EU (member since 1 May 2004), FAO, IAEA, IBRD, ICAO, ICRM, IFC, IFRCS, IHO, ILO, IMF, International Maritime Organization, Interpol, IOC,
Estonia St. Matthew's Day, where Lembitu was killed. In 1219, Valdemar II landed at Lindanise, defeated the Estonians in battle, and started conquering Northern Estonia. The next year, Sweden invaded Western Estonia, but were repelled by the Oeselians. In 1223, a major revolt ejected the Germans and Danes from the whole of Estonia, except Reval, but the crusaders soon resumed their offensive, and in 1227, Saaremaa was the last county to surrender. After the crusade, the territory of present-day Southern Estonia and Latvia was named Terra Mariana, but later it became known simply as Livonia. Northern-Estonia became the Danish Duchy of