This central, northern European country unified in 1871.

This country blockaded Germany leading to the starvation of 750,000 Germans.

This country was defeated by Germany on the Eastern Front.

This led to hundreds of thousands of African American migrating to urban cities in the north.

Repayment of damages.

The deterioration of this southeast European empire created conflict in the Balkans.

The sinking of this boat, which caused the deaths of 128 Americans, almost led American to enter the war.

This country (probably) began WWI through a declaration of war on Serbia.

The US joined WWI in this year.

A war to overthrow a government.

This is the Black Hand member who assassinated Archduke Franz Ferdinand.

The Germans pioneered the widespread use of this new type of water-going vessel during WWI.

After the advance through France stalled outside of Paris, both sides adopted this type of warfare.

What international peace-keeping body was created after World War I?

A system that prevents any one country from dominating another.

This was issued to Austria from Germany following the death of the archduke.

The Western Front of WWI was primarily fought in this country.

This was Germany's plan to invade France through neutral Belgium.

This group left the private sphere for the public sphere during WWI, taking up work in factories and working farms.

Spreading information to influence opinion.

This was the German chancellor who led German unification.

These TWO things led America to join the war on the side of the Allies.

This type of weapon dominated WWI.

After WWI, America returned to this international political stance.

This is the group that led the overthrow of the Russian government.