History Underground movements 3 World War, 1939-1945 3 Ethnic relations 2 Greeks 2 Nationalism 2 Underground movements, War 2 more ... Administrative and political divisions 1 Anti-communist movements 1 Autonomy and independence movements 1 Commerce 1 Ethnic identity 1 Foreign public opinion, Greek 1 Macedonian question 1 Macedonians 1 Public opinion 1 Refugees 1 Research 1 Territorial expansion 1 less ...