Economic conditions Ethnic relations History 4 Colonies 2 Discovery and exploration 2 Emigration and immigration 2 European 2 hơn ... Europeans 2 Frontier and pioneer life 2 Fur trade 2 Immigrants 2 Imperialism 2 Jews 2 Migrations 2 Social conditions 2 Commerce 1 Conditions économiques 1 Découverte et exploration européennes 1 Discoveries in geography 1 Economic history 1 Européens 1 Exploration 1 Fourrures 1 Histoire 1 Impérialisme 1 Pelzhandel 1 Relations interethniques 1 Vie des pionniers 1 ít hơn ...