As of April 3th, 21, 2 countries and 45 international organizations have confirmed their participation in the Shanghai World Expo. African countries or organizations Algeria, Burundi, Togo, Eritrea, Cape Verde, Congo (Brazzaville), Guinea, Comoros, Lesotho, Mali, Mauritania, Seychelles, Equatorial Guinea, Nigeria, Djibouti, Benin, Central African Republic, C? te d 'Ivoire, Angola, Egypt, Tanzania, Senegal, Zimbabwe, Zambia, Namibia, Sudan, Zimbabwe. Rwanda, Tunisia, Sierra Leone, Madagascar, Democratic Republic of the Congo, Uganda, Ethiopia, Mauritius, Niger, Mozambique, Guinea-Bissau, Liberia, Chad, Somalia, Ghana, Botswana, South Africa, Libya, Malawi and Gambia. American countries or organizations Cuba, Canada, Dominica, Bolivia, the United States, Costa Rica, Guatemala, Trinidad and Tobago, Argentina, Uruguay, Chile, Peru, Guyana, Haiti, Jamaica, Suriname, Ecuador, Venezuela, Grenada, Mexico, Nicaragua, Brazil, Antigua and Barbuda, El Salvador, Dominica, Barbados, Bahamas, Panama, Paraguay. European countries and regions or organizations France, Netherlands, Monaco, Switzerland, Ukraine, Italy, Spain, Hungary, Germany, Croatia, Britain, Bulgaria, Poland, Luxembourg, Albania, Turkey, Belgium, Lithuania, Montenegro, Moldova, Belarus, Russia, Portugal, Serbia, Finland, Azerbaijan, Greece, Czech Republic and the former Yugoslav Republic of Macedonia * * *. Cyprus, Austria, Denmark, Sweden, San Marino, Norway, Slovakia, Estonia, Bosnia and Herzegovina, Iceland, Malta, Slovenia, Latvia, Liechtenstein, Armenia, EU. Asian countries and regions or organizations China, Pakistan, Bahrain, Cambodia, Mongolia, Nepal, Sri Lanka, Tajikistan, Turkmenistan, Singapore, Vietnam, Myanmar, Kazakhstan, Kyrgyzstan, Uzbekistan, Philippines, Malaysia, Laos, Yemen, Japan, Saudi Arabia, Palestine, India, Indonesia, South Korea, Brunei, Lebanon, Georgia, Thailand, Iraq. Oceania countries or organizations New Zealand, Australia, Papua New Guinea, Vanuatu, Palau, Tonga, Micronesia, Samoa, Fiji, Cook Islands, Niue, Solomon Islands, Tuvalu, Kiribati, Marshall Islands, Nauru. International organizations: Executive Committee of CIS, United Nations Convention on Biological Diversity, World Tourism Organization, United Nations Industrial Development Organization, World Bank, United Nations, World Water Council, United Nations Framework Convention on Climate Change, League of Arab States, Organization for Economic Cooperation and Development, International Federation of Red Cross and Red Crescent Societies, African Union, World Meteorological Organization, South Pacific Tourism Organization, UNESCO, Pacific Islands Forum, World Trade Center Association, Boao Forum for Asia, Caribbean Community, Caribbean Development Bank, United Nations Children's Fund, World Wide Fund for Nature, United Nations Population Fund, Common Market of Eastern and Southern Africa, UNHCR, International Telecommunication Union, International Information Development Network, Business Forum of French-speaking Countries, Global Environment Facility, World Health Organization, International Energy Agency, UN-Habitat, United Nations Conference on Trade and Development, United Cities and Local Governments, Southeast Asian countries. EUMETSAT, GEO, FAO, IAEA, IMO, UNAIDS, UNCDF, UNEP, WIPO, International Federation of Public Transport, International Association of Museums, International Bamboo and Rattan Organization, World Trade Organization and Shanghai Cooperation Organization.