Region
China --
4
United States
3
United States --
3
China
2
Eritrea (Ethiopia) --
2
France --
2
Iran --
2
Africa
1
Africa, Southern
1
Africa, Southern --
1
Algeria
1
Algeria --
1
Asia
1
Bangladesh
1
Bangladesh --
1
Britain
1
Britain --
1
Central America
1
Central America --
1
Developing countries
1
Developing countries --
1
East Asia
1
Eastern Europe
1
Eritrea
1
Ethiopia --
1
France
1
Great Britain
1
Great Britain --
1
Green revolution
1
Hungary
1
Hungary --
1
India --
1
India-Pakistan Conflict, 1971
1
Indonesia
1
Indonesia - --
1
Indonesia --
1
Iran
1
Korea (South)
1
Mexico --
1
Moscow
1
Moscow (Russia) --
1
Nicaragua --
1
Philippines
1
Philippines --
1
Portugal --
1
Punjab
1
Russia --
1
Singapore
1
Singapore --
1
South Asia --
1
more ...