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Consequences of the Failures of the League of Nations in the 1930s

Exam code: 2147
Written by: Ashika|Reviewed by: Caroline Carroll|Updated 2 July 2026

The Impact of Manchuria and Abyssinia

The Impact of Manchuria and Abyssinia

  • In 1931, Japan invaded the Chinese province of Manchuria

  • In 1935, Italy invaded the African country of Abyssinia

  • Both incidents encouraged Hitler’s foreign policy because: 

    • Britain and France were selfish

      • The impacts of the Great Depression meant that neither country wanted a war with an aggressive nation

      • In both crises, they did not want to anger possible allies against Hitler

    • The League was slow

      • In the Manchurian Crisis, it took the League 18 months to react

    • The League was weak

      • The USA was not a member

      • Every time the League refused to act or reacted weakly, it damaged the League’s reputation

    • Hitler knew he could act without the League stopping him

      • In the Manchurian Crisis, Japan ignored the League and faced no consequences

      • In the Abyssinian Crisis, the League placed economic sanctions on Italy but did nothing to stop Mussolini’s use of chemical warfare

Germany Leaves the League

Germany Leaves the League

  • Germany left the League of Nations in November 1933. This freed Hitler to pursue an aggressive foreign policy

  • Hitler’s rearmament programme began

    • This gave Hitler the necessary military force to invade other countries

  • Many people in Britain believed that Germany was right to rearm because:

    • The Treaty of Versailles had been too harsh on Germany

    • Other countries were rearming

  • Hitler could openly display his military strength

    • Nazi Germany used rallies to:

      • Advertise the strength of the German army

      • Show Germany’s lack of respect for the military restrictions of the Treaty of Versailles

    • The 1935 ‘Rally of Freedom’ at Nuremberg reintroduced compulsory military service

      • Celebrated Nazi film-maker Leni Riefenstahl made the film Day of Freedom: Our Armed Forces on the rally

  • Hitler’s early militarism was not successful

    • In 1934, Hitler attempted to annex Austria

    • Mussolini sent troops to the Austrian border to prevent this

  • By 1939, there were around 1.4 million men in the German armed forces

    • Spending on armaments increased from 3.5 billion marks in 1933 to 26 billion marks by 1939

    • Employment in aircraft construction increased from 4,000 people in 1933 to 72,000 people by 1935

The Saar, 1935

The Saar, 1935

A diagram explaining the Saar plebiscite of 1935, with cartoon-style illustrations.

Top three blue boxes (timeline):

“The Saar was a coal-mining region on the French–German border.”

“Under the Treaty of Versailles, the League of Nations took control of the Saar for 15 years.”

“Both Germany and France wanted to claim the Saar due to its rich coalfields. Many opponents of Hitler lived in the Saar.”

Illustration:
Five men in suits sitting behind a desk, three with hands raised — representing the League of Nations.

Pink speech box labelled ‘Response of the League’:
“Allow a plebiscite in the Saar to decide who should govern the region!”

Big orange stamp over the League image says ‘NEITHER’, implying the League chose not to favour France or Germany.

Black ‘Outcome’ box on the right:

“The plebiscite was held on 13th January.”

“Over 90% of the population votes to re-join Germany.”

“Hitler promised to make no further claims on French territory.”
A flowchart showing the reasons for a dispute over the Saar region, the League’s reaction and the eventual outcome

What were the Impacts of the Saar Plebiscite?

  • The plebiscite was a propaganda victory for Hitler

    • It showed the level of support for his policies, even in a region with Nazi opponents

  • However, the League resolved a dispute legally

    • The League had stuck to the 15-year time limit set in the Treaty of Versailles

    • France and Germany had not gone to war

    • The people of the Saar achieved their aim of rejoining Germany

  • Hitler wanted to use his popularity to fulfil his idea of a Grossdeutchland

    • To fulfil this, Hitler needed to capture land lost in the treaty

    • The League wanted to avoid war at all costs

  • Hitler could increase his rearmament programme

    • The Saar provided Hitler with key natural resources for the rearmament industries

    • The League of Nations aimed to encourage disarmament

An octagonal bronze coin featuring a handshake beneath an eagle with swastika. Text and a laurel wreath are also visible on the coin.
A German badge created in 1934. The inscription states: “The Saarland is German”. The hand on the right represents the Saarland. The hand on the left represents Germany
Postage stamp featuring a mother embracing a child, with text "Deutsches Reich" and "Die Saar kehrt heim," valued at 6.
A German stamp created three days after the Saar Plebiscite. The writing at the top of the stamp reads: “The Saar comes home!”

Remilitarisation of the Rhineland, 1936

Remilitarisation of the Rhineland, 1936

A diagram explaining the remilitarisation of the Rhineland in 1936.

Three light blue boxes at the top (in a vertical sequence):

“The Rhineland was an area in western Germany that bordered France.”

“Under the Versailles Settlement, the Rhineland was demilitarised. Germany had accepted this decision in the Locarno Treaty in 1925.”

“France and Russia signed the Franco–Soviet Treaty of Mutual Assistance in 1935. Hitler used this as evidence that Germany was surrounded by enemies. They invaded the Rhineland.”

Illustration beneath:
Five suited men seated at a bench — representing the League of Nations — with three of them raising their hands.

Large red ‘FAILURE’ stamp is placed next to them.

Pink box labelled ‘Response of the League’:
“...” (shows silence or inaction)

Black box on the right labelled ‘Outcome’:

“The League is too busy with the Abyssinian Crisis to react.”

“Britain believes that Germany has a right to the land.”
A flowchart showing the reasons for Hitler’s invasion of the Rhineland, the League’s reaction and the eventual outcome

How was the Remilitarisation of the Rhineland a Failure for the League of Nations?

  • After the 1936 invasion, Hitler built up his defences along the French border

    • Germany constructed the Siegfried Line, a complex system of fortifications

    • The League of Nations had allowed Hitler to get away with breaching the Treaty of Versailles

  • Hitler gained more confidence

    • Hitler knew he could expand Germany without consequences

    • Historians believe that this was the League’s last opportunity to stop Hitler without a world war

  • Hitler developed a strategy to manipulate the League

    • After the invasion, Hitler signed a 25-year non-aggression pact with France and Britain

      • Hitler had no intention of keeping the pact

      • It made Germany seem less aggressive than it was

A colour-coded political map of Europe highlighting key territorial developments in Germany during the 1930s.

Germany in 1933 is shaded dark green.

The Rhineland, along the French border, is shaded light green and labelled “Rhineland Remilitarised, 1936.”

The Saar region, on the border with France and Luxembourg, is shaded yellow and labelled “Saar Plebiscite, 1935.”

Surrounding countries and regions are also labelled, including:

France, Belgium, Netherlands, Luxembourg, Denmark, Poland, Czechoslovakia, Austria, Hungary, Yugoslavia, Romania, Lithuania, and East Prussia (part of Germany but geographically separated).

A legend in the bottom left explains the colours:

Dark green = Germany, 1933

Light green = Rhineland Remilitarised, 1936

Yellow = Saar Plebiscite, 1935
A map showing how far Hitler had extended Germany’s territory by 1936

The Spanish Civil War

The Spanish Civil War

  • Civil war broke out in Spain in July 1936 between:

    • The left-wing Spanish government

    • Right-wing nationalist rebels led by General Franco

European Reactions to the Spanish Civil War

Country

Reaction to the Spanish Civil War

Reason for reaction

Britain

Created a Non-Intervention Committee to avoid fighting in the war

To avoid causing a bigger European war

France

Created a Non-Intervention Committee to avoid fighting in the war

Nationalist sympathisers in France could cause a civil war in the country

Germany

Sent weapons and aircraft to support right-wing rebels

To test out the new Luftwaffe and form an alliance with Mussolini

Italy

Sent weapons and aircraft to support right-wing rebels

To expand Italy’s power and influence in Europe

USSR

Sent weapons and aircraft to support left-wing government

To stop the development of another fascist state in Europe

How was the Spanish Civil War a Failure for the League of Nations?

  • The conflict killed 750,000 people

    • This went against the League’s mentality of stopping the use of war

  • General Franco won in 1939

    • Fascism had won against democracy

    • Hitler and Mussolini formed a tighter bond

      • They signed the Rome-Berlin Axis alliance in 1936

  • Germany developed devastating military tactics

    • Hitler tested the concept of blitzkrieg, or ‘lightning war’, in the conflict

    • The Luftwaffe developed new bombing techniques

      • On 26th April 1937, German and Italian bombers bombed the city of Guernica

      • Over three hours, they destroyed the city and killed hundreds of civilians

    • The Nazi’s aerial bombing shocked world leaders and their populations

      • Britain and France increased their rearmament programmes

      • People worried about the consequences of war

        • Many civilians wanted to avoid war at all costs

  • The League’s actions in the 1930s unintentionally gave Hitler success and opportunities:

An illustration showing what Hitler gained from each of the League of Nations’ failures in the 1930s
An illustration showing what Hitler gained from each of the League of Nations’ failures in the 1930s