Austria-Hungary's declaration of war on Serbia
On July 28, 1914, this empire officially declared war, beginning the first military conflict of World War I
Austria-Hungary
This date in 1914 marks when Germany formally declared war on Russia
August 1, 1914
At what time did Great Britain officially declare war on Germany on August 4, 1914?
11 p.m.
This event on June 28, 1914 triggered World War I when an Austrian archduke was killed in Bosnia.
The assassination of Archduke Franz Ferdinand by Gavrilo Princip
These two alliances fought against each other in World War I.
The Allies and the Central Powers
This Balkan country received the declaration of war after responding to a harsh ultimatum.
Serbia
Germany issued this to Russia demanding it stop military preparations before the declaration
The Russian army and navy (general mobilization)
What country did Germany want to move troops through on the way to attack France?
Belgium
This year World War I officially began after European powers started declaring war on each other.
1914
This country was part of the Central Powers along with Germany and Austria-Hungary.
Ottoman Empire
The assassination of this heir to the Austro-Hungarian throne on June 28, 1914, triggered the July Crisis.
Archduke Franz Ferdinand
Russia began this military action on July 31, 1914, which Germany viewed as a threat and led to war.
Russia refused to halt its military mobilization
What did Britain demand Germany respect before deciding to go to war?
Belgian neutrality
This country declared war on Serbia on July 28, 1914, starting the chain reaction of alliances.
Austria-Hungary
This German leader ruled during most of World War I.
Wilhelm II
Austria-Hungary justified the war by claiming Serbia failed to fully accept this diplomatic document delivered on July 23, 1914.
The Austro-Hungarian Ultimatum to Serbia
Germany declared war on Russia because Russia was mobilizing its army in support of this ally.
St. Petersburg
What event showed that diplomatic relations between Germany and France had broken down before the war?
Germany accused France of flying aircraft over German territory
This year World War I ended with the signing of the armistice on November 11.
1918
This country joined the Allies in 1917 and helped turn the war in their favor.
United States
The official declaration of war was published in this Vienna newspaper on July 28, 1914.
Wiener Zeitung
Before declaring war on Russia, Germany was aligned with this other empire that had already begun military actions in the Balkans.
That Russia’s actions created a direct threat to Germany’s security
What groups of soldiers were called up before the official declaration of war?
Reservists and Territorials
This treaty signed in 1919 officially ended the war and punished Germany.
Treaty of Versailles
This Austrian archduke was assassinated in 1914, helping start the war.
Archduke Franz Ferdinand