An alliance is an official agreement or promise between two or more countries or territories to defend and help another country regarding political, military and economic issues. Alliances developed a cordial relationship between countries supported economic and logistic elements, trade agreements, supply of weapons, military deployment, and declaration of war. All the signatory countries under one alliance gave …show more content…
A small incident in Serbia, triggered the war between Serbia and Austria-Hungary and eventually Germany was pulled into the war. The alliance of Russia with Serbia and France made Russia to participate in the war to defend their allies. A small regional dispute along with other causes exploded the war into an international war, i.e., World War I. The two great alliances involved in World War I were the Central Powers, which comprised of Germany, Austria-Hungary, and the Allied Powers, which included Great Britain, France and Russia, Italy. Russia had to withdraw from the war before the end of it. The United States stayed neutral initially, but joined Allies in 1917 because the German submarines attacked the American ships which carried American passengers. Eventually, the Allies encompassed of 25 nations defeated the Central