Relations -- Chinese reunification question, 1949- 2 Foreign relations -- 2 Social conditions -- 2 21st century 1 Americans -- 1 Chinese -- 1 more ... Congresses. -- 1 Economic conditions -- 1 Emigration and immigration -- 1 Ethnic relations 1 Forecasts 1 Foreign economic relations -- 1 Intercultural communication -- 1 National security -- 1 Politics and government 1 Politics and government -- 1 Rela 1 Security International 1 Social aspects 1 Social life and customs 1 Social life and customs -- 1 Twenty-first century -- 1 less ...