Alliance System of World War I

Alliance System of World War I Serbia Austria- Hungary Alliance System of World War I

Alliance System of World War I Serbia Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Alliance System of World War I

Alliance System of World War I Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Alliance System of World War I

Alliance System of World War I Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Russia Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Agreed to protect Serbia Russia Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Allies France Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Allies Agreed to help Russia France Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Allies Invaded neutral zone 8/1914 Agreed to help Russia France Belgium Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Great Britain Allies Invaded neutral zone 8/1914 Agreed to help Russia France Allies Belgium Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia France Allies Belgium Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Germany Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia Allies France Allies Belgium Japan Italy Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary United States 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Allies Germany Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia Allies France Allies Belgium Japan Italy Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary United States 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Allies Germany Bombed four American ships Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia Allies France Allies Belgium Japan Italy Alliance System of World War I

Agreed to protect Serbia Declared war 7/1914 Austria- Hungary United States Declared war 4/16/1917 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Allies Germany Bombed four American ships Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia Allies France Allies Belgium Japan Italy Alliance System of World War I

Agreed to protect Serbia Ottoman Empire Serbia Declared war 7/1914 Austria- Hungary United States Allies Declared war 4/16/1917 6/1914, assassinated Archduke Franz Ferdinand Allies Allies Agreed to protect Serbia Russia Allies Germany Bombed four American ships Declared war 8/1914 Great Britain Pledged to protect Belgium and declared war Allies Invaded neutral zone 8/1914 Agreed to help Russia Allies France Allies Belgium Japan Italy Alliance System of World War I