There are two main reasons for the beginning of WW1
1)The Alliance System that brought so many nations into it.
2)The desire for all the Empires to maintain themselves.
The Catalyst
A Bosnian terrorist group called The Black Hand Gang wanted Bosnia to cease to be part of the Austro-hungarian empire. When the Emperor went to Sarajevo in Bosnia A Serbian member of the Black hand, called Gavrilo Princip, assassinated the emperor.
The Austro-Hungarian regime, fearing the fall of their empire from further attacks from freedom fighters, attacked Serbia.
1)
Germany had an alliance with Austria-Hungary so came to Austro-Hungarys aid.
Russia had an allegiance with Serbia so came to Serbia's aid.
France had an alliance with Russia so came to their aid against Germnay and Austro-Hungary.
Germany, to engage France, had to go through Belgium. Belgium was an ally of Britain, so when Belgium's neutrality was violated then Britain got involved.
2)The reason for the alliances? The wish for the empires to maintain themselves. So when threats came to their empires from terrorists or other empires they fought to defend them.
If Serbia or Bosnia had been granted independence then Austro-Hungary would have had to grant independence to many of their other countries and would have lost their empire.
The other empires forged alliances to make their empires strong and to ensure help if a threat was made to their empire.
The assassination of Archduke Franz Ferdinand.
The assassination of Austrian Archduke Franz Ferdinand and his wife initiated the immediate series of events that led to World War I.
The main cause of world war 1 was all of the alliances nations made. It was also because Archduke Franz Ferdinand was assassinated by a terrorist.
it wasn't a cause but it was what the Germans believe is the reason they lost the war
workers wanted employers to return to pre-war benefits
Officially, the assasination of the heir to the Austrian-Hungary throne. But the European countries had been preparing for the war for a long time already, so this was not the real reason. The assasination was the "immediate trigger", then.
The assassination of Archduke Franz Ferdinand.
you mum was the reason
That was the Archduke Franz Ferdinand.
There were no immediate effects for most of the populace.
1 September 1939 after German troops invaded Poland. That was the immediate spark of World War 2 in Europe
The assassination of Austrian Archduke Franz Ferdinand and his wife initiated the immediate series of events that led to World War I.
The assassination of Austrian Archduke Franz Ferdinand and his wife initiated the immediate series of events that led to World War I.
The German invasion of Poland on 1 September 1939
People supported World War 1 for various reasons, the majority reason was that Germany was getting out of hand.
The US did enter World War 1, though not till 1917.
the sinking of the Lusitania.