History -- 3 Colonies -- 2 Law -- 2 Civil -- 1 Intenational law -- 1 Internaional law -- 1 International cooperation. -- 1 more ... International law 1 International law -- 1 International relations 1 International rivers -- 1 Management -- 1 Military relations -- 1 Nationalism -- 1 Politics and government 1 Slave trade -- 1 Slavery -- 1 States, New -- 1 Water-supply -- 1 Watershed management -- 1 less ...