Key facts and dates

The First World War (1914-1918) had profound effects on countries across the Americas, reshaping economies, politics, societies, and international relations. The United States and Brazil, though experiencing the war in different contexts, underwent significant changes that influenced their trajectories in the 20th century.

Timeline of key events

• 1914-1918 – First World War disrupts global trade, boosting commodity exports in Brazil and industrial production in the United States.
• 1917 – United States enters the war, providing over $10 billion in loans to Allies.
• 1919 – Post-war agricultural depression hits U.S. farmers; labour strikes peak in the United States.
• 1919-1920 – "Red Scare" and Palmer Raids target radicals in the United States.
• 1920 – U.S. women gain suffrage through the 19th Amendment, partly due to war contributions.
• 1920s – United States returns to isolationism, rejecting membership in the League of Nations.
• Post-1918 – Brazil sees industrial growth and urbanisation, alongside increased economic ties with the United States.

Economic transformations due to the First World War

The First World War triggered significant economic shifts in both the United States and Brazil. These changes were driven by the disruption of European production and trade, creating opportunities and challenges for American countries on different scales.

Economic impact on the United States

• Shift from debtor to creditor nation - Before the war, the U.S. owed money to European nations, but by providing over $10 billion in loans to the Allies, it emerged as a major creditor, fundamentally altering its global financial position.
• Industrial expansion - Wartime demand led to a massive increase in industrial capacity, with factories producing goods for both domestic needs and Allied support, strengthening manufacturing sectors.
• Agricultural boom and bust - Farmers initially profited from high demand for food exports to Europe, but a post-war depression in 1919 resulted from falling prices as European agriculture recovered, leaving many in debt.
• Inflation challenges - The rapid economic growth and increased production caused prices to rise, reducing purchasing power for many Americans and contributing to post-war economic discontent.

Economic impact on Brazil

• Export boom for commodities - With European production disrupted, Brazil's exports of coffee, rubber, and other raw materials surged, bringing significant revenue during the war years.
• Growth of national industries - Reduced imports from Europe forced Brazil to develop its own manufacturing base, fostering industrial growth in urban centres and reducing reliance on foreign goods.
• Accumulation of foreign exchange reserves - High export earnings allowed Brazil to build up financial reserves, providing a temporary economic cushion.
• Post-war vulnerability - When European markets recovered after 1918, demand for Brazilian commodities dropped, exposing the fragility of an export-dependent economy and leading to economic adjustments.

Political changes resulting from the war

The war not only reshaped economies but also had lasting political consequences in both the United States and Brazil. These ranged from expanded government roles to shifts in public sentiment and political movements.

Political developments in the United States

• Expansion of federal power - The war necessitated greater government involvement in the economy, through measures like price controls and resource allocation, setting a precedent for future interventions.
• Disillusionment with idealism - President Woodrow Wilson's vision of a peaceful world order faltered, leading to widespread cynicism and a backlash against progressive ideals.
• Red Scare and Palmer Raids (1919-1920) - Fear of communism, fuelled by the Russian Revolution and labour unrest, prompted government crackdowns on suspected radicals, with thousands arrested or deported during the Palmer Raids.
• Restriction of immigration - Post-war nativism led to stricter immigration laws in the 1920s, reflecting fears of foreign influence and economic competition.
• Return to isolationism - Disappointment with the war's outcomes and rejection of the League of Nations marked a retreat from international engagement in the 1920s, prioritising domestic concerns.

Political developments in Brazil

• Strengthening of state capacity - The need to manage wartime economic shifts led to increased government control over trade and industry, enhancing the role of the state in national affairs.
• Emergence of middle-class movements - Industrial growth created a burgeoning middle class that began to demand political representation, influencing future reforms.
• Labour organisation - Urban workers, empowered by industrial expansion, formed unions and pushed for better conditions, occasionally leading to strikes and tensions with authorities.
• Political instability - Post-war economic downturns caused discontent among various social groups, contributing to periodic unrest and challenges to existing political structures.

Social impacts of the war

The societal effects of the First World War were profound in both the United States and Brazil, accelerating existing trends like urbanisation while creating new social dynamics and tensions.

Social changes in the United States

• Great Migration - Millions of African Americans moved from the rural South to urban North during and after the war, seeking industrial jobs and escaping segregation, significantly altering racial demographics in cities.
• Women's suffrage - Women's contributions to the war effort, including work in factories and nursing, bolstered the push for voting rights, culminating in the 19th Amendment in 1920.
• Labour militancy - In 1919, widespread strikes involving millions of workers demanded better wages and conditions, reflecting economic strain and post-war adjustments.
• Intolerance toward immigrants and radicals - Nativist sentiments grew, targeting immigrants and suspected communists, leading to social divisions and discriminatory policies.

Social changes in Brazil

• Accelerated urbanisation - Industrial growth drew rural populations to cities, expanding urban centres and changing traditional ways of life.
• Strengthening of labour movements - As factories grew, workers organised for rights and protections, increasing their visibility and influence in society.
• Expansion of the middle class - Economic opportunities created a larger middle class, which began to play a more active role in cultural and political spheres.
• Increased inequality - While some prospered, many rural and lower-class Brazilians saw little benefit from wartime gains, widening social gaps and creating long-term challenges.

Shifts in foreign policy post-war

The First World War redefined how the United States and Brazil engaged with the world, reflecting changes in their economic positions and national priorities. These shifts had lasting implications for their international roles.

Foreign policy changes in the United States

• Failure to join the League of Nations - Despite President Wilson's advocacy, the U.S. Senate rejected membership, signalling a rejection of multilateral commitments.
• Separate peace treaties - The U.S. negotiated individual treaties with Germany and other Central Powers, avoiding entanglements in European alliances.
• Shift toward unilateralism - While retreating from political involvement, the U.S. maintained global economic and financial engagement, reflecting a selective approach to international affairs.
• Continued economic influence - As a creditor nation, the U.S. played a key role in global finance, shaping economic policies worldwide despite political isolationism.

Foreign policy changes in Brazil

• Growing economic independence from Europe - Reduced reliance on European imports and markets encouraged Brazil to seek alternative trade partners and assert greater autonomy.
• Increasing ties with the United States - Economic links with the U.S. strengthened due to wartime trade and investment, though this created mixed feelings about American influence.
• Participation in the League of Nations - Brazil joined the League, marking a step toward international engagement and a voice in global affairs.
• Assertion of regional interests - The war prompted Brazil to focus on Latin American solidarity and regional leadership, balancing ties with the U.S. and European powers.