Money. You can call it politics, but the bottom line is power, which equates to money. Always look at the bottom line: if nobody was making money selling arms and power, peace would break out all over the place.
123 countries involved in the war
Countries selling weapons and supplies to the countries at war
To provide an accurate answer, I would need to know which war you are referring to and the list of countries you have in mind. Could you please specify the war and the countries?
By going to war.
France and Germany were the last two countries in World War 1.
A world war is a war who is included every countries
Most countries go to war for two reasons. The two reasons why countries go to war are because of power and money.
which war?
about 52 countries.
== ==
roles of countries did not change during the war, they were the same as before and afterwards.
what countries wre defeated in world war 1