The Great Depression and 1930s Tensions

The "Hinge Years": How the Great Depression Destroyed Diplomacy

Imagine relying on a single wealthy friend to pay your rent, and suddenly they go bankrupt. This is exactly what happened to the global economy after the 1929 Wall Street Crash. The USA recalled international loans (like the Dawes and Young Plans), plunging the world into the Great Depression and ending the cooperative "Spirit of Locarno" of the 1920s.

As economies collapsed, countries abandoned international cooperation in favour of National Self-Interest. In 1930, US President Hoover disastrously introduced the Smoot-Hawley Tariff, raising taxes on over 20,000 imported goods. Over 60 countries retaliated with their own tariffs, halving global trade and creating an era of ruthless Protectionism.

In Germany, industrial production plummeted by 45% and unemployment peaked at 6 million by 1932 (roughly 40% of the workforce). This desperate poverty destroyed faith in the moderate Weimar Republic, leading the electorate to vote for extremist solutions. Hitler became Chancellor in 1933, promising "Work and Bread" through a massive rearmament drive.

Other nations also suffered severely, prompting radical government responses:

• Italy: Unemployment rose from 0.5 million to 2 million by 1933. Mussolini created the IRI to bail out banks, eventually controlling 20% of Italian industry. Public debt soared to 150 billion lira, making military conquest a necessary distraction.
• France: Initially protected by holding one-third of the world's gold stock, the Depression hit later. Pierre Laval's strict 10% cuts to public wages in 1935 caused massive unrest, eventually leading to the left-wing Popular Front government.
• Japan: The value of its main export, silk, halved due to foreign tariffs, causing widespread peasant poverty and fueling a desire for militaristic expansion.

The Vicious Cycle of the Depression on Diplomacy

1. Economic Crisis: Global trade collapses due to tariffs; mass unemployment ensues.
2. Political Extremism: Voters reject moderate politics; dictators seize power.
3. Rearmament: Dictators build armies to create jobs (e.g., Germany spent 20% of its GDP on arms by 1938, achieving Autarky).
4. Conflict: Rearmament demands aggressive territorial expansion to acquire raw materials, directly causing war.

The Failure of the League of Nations

A police force is useless if its officers refuse to arrest criminals because they are too worried about their own budgets. During the 1930s, the League of Nations failed entirely because its leading members prioritised their own economic survival over Collective Security.

The Manchurian Crisis (1931–1933) began with the Mukden Incident, where Japanese troops fabricated a railway bombing to justify invading Manchuria for iron and coal. The League dispatched the Lytton Commission, which took an entire year to publish its report condemning Japan. Because the USA was not a League member and Britain was suffering from the Depression, Economic Sanctions were impossible; Japan simply left the League in March 1933.

The fatal blow came with the Abyssinian Crisis (1934–1936). Following the Wal-Wal Incident, Mussolini invaded Abyssinia to secure oil and distract from Italy's 150 billion lira public debt. The League imposed sanctions but fatally excluded coal and oil, as Britain feared losing mining jobs.

Crucially, Britain and France kept the Suez Canal open to Italian troop ships to avoid upsetting Mussolini. The League's moral authority was shattered when the press leaked the Hoare-Laval Pact (a secret British-French deal to give Mussolini two-thirds of Abyssinia). Italy eventually signed the Rome-Berlin Axis with Hitler, proving the League was a powerless "Paper Tiger".

The Road to War: Aggression and Appeasement

If you repeatedly give a bully your lunch money hoping they will leave you alone, they will often just come back for more. This summarises Appeasement—the British and French policy of making concessions to Hitler to avoid another devastating war.

Hitler's foreign policy aimed to overturn the Treaty of Versailles, destroy Communism, and achieve both Lebensraum (living space) and Grossdeutschland (a union of all German-speakers). He gained early confidence from the 1935 Saar Plebiscite. Held legally by the League of Nations, 90.8% of the Saarland population voted to rejoin Germany, giving Hitler a massive propaganda victory and vital coal reserves.

While the League was distracted by Abyssinia in 1936, Hitler boldly sent 22,000 troops to remilitarise the Rhineland. Britain and France, militarily weak and economically damaged by the Depression, did nothing. Hitler's aggression escalated rapidly:

• March 1938: He achieved Anschluss with Austria (99.7% voted in favour following Nazi intimidation).
• September 1938: At the Munich Agreement, Britain and France allowed Germany to annex the Sudetenland in exchange for a promise of peace.
• March 1939: Hitler invaded the rest of Czechoslovakia, breaking the Munich Agreement and proving Appeasement had failed.

Appeasement remains highly controversial. The "Guilty Men" interpretation (1940s) argues politicians like Chamberlain were cowardly and blind to Hitler's threat. However, Revisionist historians (1960s) argue Chamberlain was simply buying necessary time to rearm Britain, as the nation was economically unprepared for war following the Depression.