Glorification of military power and aggressive build-up of armed forces.

Strong sense of pride and devotion to one's nation, often leading to the belief in its superiority.

Policy of extending a country's power through colonization and control of other territories.

Germany's strategy to quickly defeat France by invading through Belgium.

A Serbian nationalist terrorist group aiming to create an independent Serb state.

Battleships built by Britain in response to Germany's naval build-up, escalating tensions.

A pre-WWI alliance between Austria-Hungary, Germany, and Italy (later the Ottoman Empire).

A pre-WWI alliance between Britain, France, and Russia.

A conference of European powers that aimed to establish a balance of power after the Napoleonic Wars.

To expand the German navy, leading to a naval arms race with Great Britain.

Conflicts arose from conflicting nationalist aims in the Balkan region.

Archduke Franz Ferdinand of Austria-Hungary was assassinated in Sarajevo.

Germany expanded its navy, leading to a naval arms race with Great Britain and increasing tensions.

It further intensified the military build-up across Europe, increasing the likelihood of war.

Serbia refused some demands, leading Austria-Hungary to declare war, triggering a chain reaction.

Great Britain declared war on Germany, joining the Allied Powers.

Germany planned an attack on France through Belgium to achieve a swift victory.

Germany declared war on Russia.

It triggered a chain reaction of declarations of war due to the alliance system.

It disrupted the balance of power established by the Congress of Vienna and increased competition between European powers.

Cause: Industrialization and competition. Effect: Arms race, increased tensions, and readiness for war.

Cause: Desire for security and strategic advantage. Effect: Dragged nations into war due to a domino effect.

Cause: Strong sense of pride and devotion to one's nation. Effect: Destabilization of multi-ethnic empires and increased tensions.

Cause: Desire for resources and economic gain. Effect: Increased competition and tensions between European powers.

Cause: Serbian nationalism and desire for independence. Effect: Austria-Hungary's declaration of war on Serbia, triggering WWI.

Cause: Germany's desire to expand its power. Effect: Naval arms race with Great Britain and increased tensions.

Cause: Germany's desire for a swift victory over France. Effect: Invasion of Belgium and Great Britain's entry into the war.

Cause: Conflicting nationalist aims in the Balkan region. Effect: Increased tensions and instability in the region.

Cause: Austria-Hungary sought support after the assassination. Effect: Germany backed Austria-Hungary, escalating the crisis.

Cause: Support for Serbia. Effect: Germany declared war on Russia.