20th century -- History -- 5 20th century 2 Agriculture -- 1 Agriculture and state -- 1 Authoritarianism -- 1 Congresses 1 more ... Democracy -- 1 Despotism -- 1 Economic aspects -- 1 Economic integration -- 1 Economic policy -- 1 Great Britain -- 1 Human rights 1 International relations 1 Land reform -- 1 Occupational training -- 1 Race relations -- 1 Racism -- 1 Universities and colleges -- 1 Vocational education -- 1 World politics -- 1 less ...