History Historia 6 Foreign relations 4 Communism 3 Revolutions 3 Economic conditions 2 Government policy 2 más ... Military policy 2 Political aspects 2 Relations 2 Social aspects 2 Social conditions 2 Armed Forces 1 Battle casualties 1 Cold War 1 Comparative education 1 Comunismo 1 Consumers 1 Consumption (Economics) 1 Cost and standard of living 1 Decision making 1 Derecho 1 Economic aspects 1 Economics 1 Educational sociology 1 Emigration and immigration 1 Ethnic relations 1 Filósofos 1 Foreign public opinion, American 1 Guerrillas 1 menos ...