United States 107
Great Britain 43
Japan 34
China 27
Netherlands 24
Developing countries 23
Canada 12
East Asia 11
France 11
Europe 10
India 9
Southeast Asia 9
Soviet Union 9
Asia 8
Latin America 8
America 7
Rome 7
Spain 7
Africa 6
Great Lakes (North America) 6
Turkey 6
New York (N.Y.) 5
North America 5
Africa, West 4
Brazil 4
England 4
European Economic Community countries 4
Holland (Mich.) 4
London (England) 4
Michigan 4
Middle East 4
East Indies 3
Europe, Eastern 3
Greece 3
Holland 3
Indian Ocean Region 3
Mexico 3
New England 3
New York (State) 3
South America 3
Tanzania 3
West Indies 3
Africa, Sub-Saharan 2
Atlantic Ocean Region 2
Benin 2
Communist countries 2
Eurasia 2
Florence 2
Florence (Italy) 2
Islamic countries 2
Italy 2
Korea (South) 2
London 2
Mediterranean Region 2
Pacific Area 2
Paris 2
Paris (France) 2
Portugal 2
Rhode Island 2
Russia (Federation) 2
Sahara 2
Silk Road 2
Zanzibar 2
Afghanistan 1
Africa, East 1
Africa, Eastern 1
Africa, North 1
Amazon River 1
Amsterdam 1
Amsterdam (Netherlands) 1
Angola 1
Anomabu (Ghana) 1
Asia, Central 1
Augsburg 1
Augsburg (Germany) 1
Australia 1
Babylonia 1
Baltic Sea Region 1
Baltic States 1
Barcelona 1
Barcelona (Spain) 1
Boston 1
Boston (Mass.) 1
California 1
Caribbean Area 1
Central America 1
Cincinnati (Ohio) 1
Colombia 1
Congo River Watershed 1
Connecticut 1
Cuba 1
Detroit Metropolitan Area 1
Developed countries 1
Europe, Northern 1
Former Soviet republics 1
Germany 1
Ghana 1
Girsu (Extinct city) 1
Guangzhou (China) 1
Guangzhou Shi (China) 1