First, we have Austria-Hungary. Franz Josef and then his grandson the archduke Franz Ferdinand. Franz Ferdinand gained control of portions of the Balkan Peninsula (i.e. Bosnia). So he and his wife, Sophie, went to Bosnia and basically tried to get them to "be happy" under Austrian-Hungarian rule. Just the opposite happened...on June 28, 1914, Ferdinand was assassinated by a Serb named Princip. See, Serbia was trying to protect Bosnia. None of the countries in the Balkan Peninsula wanted to be ruled by stronger foreign nations, so they were all helping each other win independence (even if they had to assassinate someone!). After Franz Ferdinand died, a new leader ruled Austria, and declared war on Serbia because a Serb had killed Ferdinand. Russia had always been friends with Serbia, so it supported them. Austria-Hungary sent out an "ultimatium" to Serbia, saying that they had to agree to certain policies because they had caused so much trouble and had killed their former ruler. Serbia wanted to negotiate to certain terms of the ultimatium, but Austria-Hungary was SO against that. That's why they declared war on Serbia. This got Russia involved too.
AND Austria-Hungary and Germany were allies through the Triple Alliance. So when Russia and Serbia started fighting with Austria-Hungary, they were basically fighting with Germany as well. Soon enough, Germany declared war on Russia. At this point, Russia was allies with Great Britain and France through the Triple Entente. The tiny conflict in the Balkan Peninsula got SO many different countries involved in what soon became the First World War (then known as the Great War). The Triple Alliance of Germany and Austria-Hungary became known as the Central Powers and grew to include Bulgaria and the remaining Ottoman Empire. Also, the Triple Entente of Russia, Great Britain, and France became known as the Allied Powers and grew to include Japan, Italy, and the United States.
Hope that helps!
the causes of WW1 was mainy the assassination of Archduke Farnz Ferdinand of Austria-Hungary. he was killed by a Serbian named Gavrilo Princip when he shot him several times. Austria got mad and went to war with Serbia only to find out that Serbia was allied with russia and russia was allied with France. Germany felt threatened and they declared war against Russia then France the day after. Many other countries were dragged into to this because of Militarism, Alliances, Imperialism and Nationalism which all contribute to WW1.
The US joined WWI after a German U-Boat sank a cruise ship that was thought to be carrying military weapons and equipment. There were several Americans on the cruise ship that were killed and in retaliation the US joined WWI
do you mean what caused us entry into world war one? if so then the sinking of the USS Lusitania by German u-boats was what caused American entry into the war
Militarism, the other three causes for US entry into the war are imperialism nationalism and alliances.
The Franco-Prussian War was not directly related to the entry of the US into World War I.
isolationism
America was a late and reluctant entrant into the Great War. It was thrust into WW-II by the Japanese attack on Pearl Harbor.
do you mean what caused us entry into world war one? if so then the sinking of the USS Lusitania by German u-boats was what caused American entry into the war
Pearl Harbor
The reason was because of slavery and books
Militarism, the other three causes for US entry into the war are imperialism nationalism and alliances.
The Japanese attacked Pearl Harbor December 7, 1941.
Because this was the main reason for the US entry in WW2, and the American entry in the war was significant for the course and outcome, it affected the entire world.
The Franco-Prussian War was not directly related to the entry of the US into World War I.
Maybe you haven't heard of the Japanese attack on Pearl Harbour on 7 December 1941.
He invaded Poland on September 1, 1939.
world 2 war
One of the cause of America entry into World War One was the announcement by Germany that there was unrestricted submarine warfare. The effect of America's entry is that it sped the end of the war.
There was no World War 27