Great Britain, France, Belgium, Russia. Russia backed Serbia. As Russia was allies with Britain and France through the triple entente, Serbia had their backing as well. Eventually, America and Belgium supported them too.
Russia jumped in on Serbia's side, dragging in her ally, France, in the process. This triggered the German attack on France, which the Germans made by way of Belgium. Going through Belgium brought Great Britain in. So Russia, France, Belgium and Great Britain (and all her Commonwealth states and colonies).
Serbia and Austria got into a fight. Russia sided with Serbia as Serbia's "big brother". France and Russia were friends so France joined in. Germany and Austria were friends so Germany sided with Austria. Then Germany invaded Belgium (who tried to stay impartial) to attack France. Britain got involved as there was a contract/agreement between Belgium and Britain from a 100ish years ago saying that Britain will help protect Belgium in a war (Britain felt left out) then America joined later. so in odder of who joined first Serbia Austria Russia Germany France Belgium Britain America
Serbia and Austria got into a fight. Russia sided with Serbia as Serbia's "big brother". France and Russia were friends so France joined in. Germany and Austria were friends so Germany sided with Austria. Then Germany invaded Belgium (who tried to stay impartial) to attack France. Britain got involved as there was a contract/agreement between Belgium and Britain from a 100ish years ago saying that Britain will help protect Belgium in a war (Britain felt left out) then America joined later. so in odder of who joined first Serbia Austria Russia Germany France Belgium Britain America
Russia, Great Britain, Italy, Serbia, Belgium, France, Monte Carlo,
Britain, Russia, Japan, Belgium, Italy, Serbia and, later, America
Serbia russia France Britain belgium Romania u.s. Italy Greece Portugal and japan
WWI- Russia, Britain, France, Italy, Japan, Serbia, Belgium, Canada. WWII- Soviet Union, Britain.
*Austria declared war on Serbia *Germany supports Austria *Russia helps Serbia *Germany declares war on Russia *France joins Russia *Germany invades Belgium. *Britain declares war on Germany for invading Belgium because Britain & Belgium had an agreement of protection *then Italy, Japan and USA
United States, Great Britain, France, Italy, Japan, Serbia, Belgium, Russia.
Triple Entente consisted of the United Kingdom , France and Russia .
= triple entente: = *RUSSIA*GERMANY*FRANCE