Switzerland, Belgium, Spain, Sweden, Norway, Ireland, Netherlands, Luxembourg, Most of South America minus Portugal States, Ethiopia, Afghanistan, Persia, etc.
These two major countries are England and United States of America.
World War 1 left the countries that were involved with a major distrust of people from other countries. Resentment was caused in countries such as Germany and Italy who lost land during the war.
The United States of America
the world bank provide loans for developmental projects and relief materials during major disasters.
England and France.
The major countries that were Axis in WWII are Germany, Italy and Japan.
The original intent was referring to countries that did not align with either major power bloc during the Cold War. - However, the meaning has now apparently evolved to refer to poorly developed, less industrialised and politically unsophisticated countries.
The five major oil-producing countries in the world are the United States, Saudi Arabia, Russia, Canada, and China. These countries collectively account for a significant portion of global oil production and reserves.
There are over 2 dozen major desert areas in the world. Click on this link for a list of the major desert areas and the countries in which they occur.
For a list of the major desert regions of the world click on this link.
Because most of the major countries of the world were involved in the fighting.
During World War II, the major countries on the Allied side included the United States, the Soviet Union, the United Kingdom, China, and France. On the Axis side, the key nations were Germany, Italy, and Japan. The conflict involved a broad coalition of nations, but these were the primary powers that played significant roles in the war's major theaters.