After archduke Ferdinand was assassinated, Austria Hungary declared war on Serbia. Russia then came to Serbia's aid because of an alliance and declared war on Austria Hungary. Germany declared war on Russia because of its alliance with Austria Hungary. Britain declared war on Germany because of its alliance with Russia. Other countries such as France and the Ottoman Empire soon chose sides and World War 1 began
They had an alliance with Serbia.when gravilio princip, Serbian nationalist assassinated franz Ferdinand Austria Hungary declared war on Serbia, so Russia declared war on Austria Hungary due to the alliance. They got out of the war by giving Germany some land because they were getting whooped, they sued for peace.
After the Austro-Hungary monarchy declared war on Serbia, France and Russia who were protecting Serbia declared war on Austria-Hungary. and then Germany declared war on Russia and France, then UK declared war on Germany...
Austria-Hungary declared war on serbia and Germany joined because it was allied with austria.
Because of its alliance with Austria-Hungary. Yeah that might be correct!
When Russia started fighting against Germany, Russia's allies (Norway,Austro-Hungarian and England all stepped in to help one by one. Then Russia's allies (America and Switzerland stepped in, leading to the GREAT WAR.
Mobilized its military because of its alliance with Serbia.
Serbia was in WWI because Austria-Hungary declared war on them.
Archduke Ferdinand and his wife were assassinated by Serb separatists. Austria-Hungary sent them an ultimatum, the result of which drew Russia into the situation, because Russia was the self appointed defender of the Slavs. When war was declared between the two, France was forced in due to its alliance with Russia, and Germany was forced in due to its alliance with Austria-Hungary. Finally, England declared war on Germany for declaring war on Belgium.
It was a World War because a man killed the archduke of Austria-Hungary in Sebia. Austria-Hungary declared war on Serbia. Serbia had an alliance with Russia and then Russia joined the war. Russia was in the Triple Entante and pulled Britain and France into the war. Austria-Hungary had alliances with Germany and the Ottoman Empire. They also joined the war. That is why World War I was a world war.
US declared war on Germany because of the U-Boats attacking vessels. The Central Powers such as Germany, Austria-Hungary, and the Ottoman Empire declared war on the Allied Powers such as Great Britain, France, Russia, Italy, and Japan. While that was going on the the Triple Alliance such as Argentina, Brazil, and Uruguay were in war with the Triple Entente such as France, Russia, and Great Britain.
The alliances helped cause world war 1 because when Franz Ferdinand the Archduke of Austria-Hungary was assassinated along with his wife it caused Austria-Hungary to declare war on Serbia. This was what set off the alliances and all hell broke loose. Russia immediately jumped in to protect Serbia who they had an alliance with. Then Germany came in to protect Austria-Hungary and declared war first on Serbia but also on Russia and France. But to get to France it would need to go through Belgium and France and Britain declared war on Germany. The alliances were called the triple alliance and the triple entente. The triple alliance consisted of Germany, Austria and Italy. The triple entente included Britain, France and Russia.