Causes of WWI

loyalty to a nation or ethnic group

buildup of armaments in preparation for war

avoidance of military involvement in civil wars

control of territories for economic and political gain

beginning of World War I

outbreak of the Cold War

development of communist rule in Europe

strengthening of European monarchies

Iberian Peninsula

British Isles

Balkan Peninsula

Scandinavia

rebellions in colonial lands in Africa and Asia

expansion of communism into western Europe

militarism in the nations of Europe

inability of the League of Nations to keep the peace

start of the civil war in Russia

sinking of the British liner, Lusitania

assassination of the heir to the throne of the Austro-Hungarian Empire

attack on Poland by the German army

before the Congress of Vienna

before World War I

after the Treaty of Versailles

after the formation of the United Nations