1. decided to join forces with Germany and the Central Powers
2. needed to concentrate its troops and resources on its war with Turkey
3. wanted to retain power and avoid German occupation
4. needed to control the Baltic Sea and wanted a warm water port

Correct Answer Number: 3

Explanation: V.I. Lenin ended Russian involvement in World War in March of 1918 when he signed the Treaty of Brest-Litovsk. This cost Russia a large amount of land, but allowed Lenin to focus on gaining control of his newly won country.

1. great ethnic diversity found in the region
2. economic dependence of Eastern Europe on Japan
3. acceptance of democratic traditions by most Eastern Europeans
4. expansion of United States influence in the region

Correct Answer Number: 1

Explanation: The collapse of the Austro-Hungarian Empire and the Ottoman empire left many regions in turmoil. Newly formed countries, such as Czechoslovakia and Yugoslavia were multinational, which led to infighting and ethnic violence.

1. World War I created conditions within Russia that helped trigger a revolution
2. World War I postponed the Russian Revolution by restoring confidence in the Czar
3. the Russian Revolution inspired the Russian people to win World War I
4. World War I gave the Czar’s army the needed experience to suppress the Russian Revolution

Correct Answer Number: 1

Explanation: Russia’s involvement in World War One led to a series of military defeats as the Russian army was ill-equipped to deal with modern battle conditions. Russia also experienced a severe food shortage due to the war, which in turn led to riots and the eventual abdication of Czar Nicholas II in March of 1917. These events set the conditions for the Russian Revolution.

1. a decline in the policy of imperialism
2. the existence of opposing alliances
3. an increase in acts of aggression by England
4. the spread of communism throughout Europe

Correct Answer Number: 2

Explanation: The four main cause of World War One are the Alliance System, Imperialism, Nationalism, and Militarism.

1. The aggression of the Ottoman Empire was disrupting the balance of power.
2. Yugoslavia was invading its neighboring countries.
3. Nationalistic and imperialistic rivalries were increasing.
4. The area was the leading supplier of military equipment to the rest of the world.

Correct Answer Number: 3

Explanation: Tensions were caused by the multinational conflict between the Slavic peoples of the Balkan region, who had Russian support, the weakening Ottoman Empire, and the Austro-Hungarian Empire. All tried to control this region and limit each other's expansionist ideas. These tensions would ultimately lead to the start of World War One.

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1. an era of peace and international good will in Germany
2. a stable Germany that was both democratic and strong
3. an increase in Germany’s desire to regain its power and prestige
4. a leadership position for Germany in the League of Nations

Correct Answer Number: 3

Explanation: The Treaty of Versailles was a humiliating end of the war for Germany. The treaty contained unrealistic monetary reparations, large territorial losses, and most importantly, the "war guilt" clause. The war guilt clause blamed Germany entirely for the war. This in turn led Germany to seek a return to its former status among nations.

1. Franco-Prussian War
2. Crimean War
3. World War I
4. Cold War

Correct Answer Number: 3

Explanation: These are all events that occured during World War One.