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Germany, Austria/Hungary, and Italy by the Triple Alliance!!
Austria-Hungary and Serbia
Russia, being the largest and most powerful of all the Slavic countries, was viewed as the protector of all the Slavic people. When Austria-Hungary declared war on Serbia, Russia retaliated against Austria-Hungary to assist their Slavic bretheren.
Serbia, Austria Hungary, Germany v. Brittan, France, U.S.A.
after 4 years of fighting Serbia won the war with many allies on there side
Like many wars, it got bigger because of the system of Alliances that each country had with other countries.
If you mean how did alliances cause WWI, it was because when one country attacked another, each ally had to fight for the first, which made more people angry Serbia provoked Austria Austria attacked Serbia Russia was allied to Serbia, so they attacked Austria Germany was allied to Austria so they attacked Russia's allies, France and England
They both wanted dominance of the Balkans. Austria-Hungary controlled Bosnia and Herzegovina were there were a large number of ethnic Serbs. So Serbia believed they should control this area. In Russia at the time there was a belief in pan-Slavism (that all the Slavs in the world should help each other, in this case Russia should help Serbia). So when Austria-Hungary threatened to invade Serbia if its demands were not met in 1914 Russia came to help its ally and "Slav brother" Serbia, this would also serve to give Russia dominance in the Balkans.
Austria-Hungary and its ally, Germany, declared war on Serbia. Great Britain, France, and Russia declared war on Austria-Hungary and Germany since they had an alliance with each other and had agreed to protect Serbia. This started World War I.His assassination in Sarajevo sparked World War One.See the related link listed below for more information:
Never
Russia claimed to be big brother to its Serbian brothers and Austria was demanding that the Serbs be punished for killing their Archduke Ferdinand. Germany and Austria had a mutual protection pact with each other so both went to war against Russia.
central powers allied powers Austria- Hungary great Britain Germany France turkey Russia Belguim Serbia