1. World War I and the Russian Revolution (1914–1924)
Lesson 1 World War I Begins

2. World War I and the Russian Revolution (1914–1924)
Lesson 1 World War I Begins
Learning Objectives
Describe how imperialism, nationalism, and militarism pushed Europe closer to war.
Identify the key event that sparked World War I.
Trace how the alliance system drew nations into the war.

3. World War I and the Russian Revolution (1914–1924)
Lesson 1 World War I Begins
Key Terms
entente
militarism,
Alsace and Lorraine
ultimatum,
mobilize,
Neutrality

4. European Powers Form Alliances
The first Olympics of the modern era, held in Athens in 1896, represented a hope for a more peaceful world. The opening ceremony is shown here.

5. Economic rivalries between Germany and Britain causes tensions..
Major Causes of World War I
During the late 1800s and early 1900s, tensions were increasing among the great powers of Europe. Aggressive nationalism, economic competition, imperialism, militarism, and an arms race all helped fuel an atmosphere of suspicion and distrust.
Economic rivalries between Germany and Britain causes tensions..
France and Germany competed for colonies.
With international tensions on the rise, the great powers began to build up their armies and navies.
Aggressive nationalism also caused tension between European powers.
Russia sponsored Pan-Slavism., because Slavic peoples shared a common nationality.

6. Major Causes of World War I
1912, several Balkan states—Serbia, Greece, Bulgaria and Montenegro—attacked Turkey and succeeded in taking a large area of land away from Turkish control.(Balkan Powder Keg)

7. Major Causes of World War I
A Parisian newspaper presented this view of imperialism. The caption says “France freely gives Morocco civilization, peace, and wealth.” Hypothesize Who might have opposed this viewpoint? Why?

8. Major Causes of World War I
Analyze Data According to this infographic, which country had the most soldiers? Which country had the largest navy?

9. The Balkan Powder Keg Explodes
As Bismarck had predicted, the Great War began in Eastern Europe. A regional conflict between tiny Serbia and the huge empire of Austria-Hungary grew rapidly into a general war that would mark one of history’s significant turning points.
Ferdinand (nephew of Francis Joseph, was assassinated by the Black Hand (Serbian terrorist),
Germany persuaded Austria to issue an ultimatum to Serbia, so Austria declared war on Serbia July 28, 1914

10. The Balkan Powder Keg Explodes
Interpret What does this medal from the Serbian nationalist organization the Black Hand suggest about the nature of the organization?

11. The Alliance System Leads to War
The war between Austria and Serbia might have been another “summer war,” like most European wars of the previous century. However, the carefully planned alliances soon drew the great powers into the conflict.
While France and Russia showed support for Serbia, Germany declared war on Russia. and France.
While Italy remained neutral, Germany feared France in the West and Russia in the East, so they planned to attack each country separately.
Due to German invasion of Belgium (neutral), Britain declared war on Germany.

12. The Alliance System Leads to War
To aid its ally Serbia, Russia mobilized its army, including these Cossacks. As World War I began, European armies still sent cavalry units into battle.

13. The Alliance System Leads to War
Analyze Maps How does this map help explain the expansion of World War I from a localized to a global war?