Between 1860 and 1929, countries across the Americas — from the USA to Argentina to Mexico — went through the same huge shift. They stopped being mostly rural, farming societies and became modern, industrial, city-based ones.
The engine of that change was the railroad. Laying thousands of kilometres of track let countries move grain, cattle, cotton, silver and coffee from the interior to the coast — and from there, onto ships bound for Europe and the USA.
Cause and consequence: rails first, everything else follows: Railroads were not just transport — they were the cause of a chain reaction. Rail access made land in the interior profitable, which pulled in migrant labour, which fed new factories and ports, which then needed even more rail lines. Historians treat 1860–1929 as a story of economic transformation — a fundamental, structural shift in how a country makes its money — driven by this one technology.
In the United States, the transcontinental railroad (finished 1869) opened the West to settlement and made Chicago a meatpacking and grain hub almost overnight. In Argentina, British-funded rail lines fanned out from Buenos Aires like spokes on a wheel, built specifically to move Pampas beef and wheat to the port for export.
- Industrial growth — factories, steel mills and meatpacking plants sprang up wherever rail met a port, turning raw materials into goods (or at least processed exports) faster than ever before.
- Urbanization — urbanization exploded: Buenos Aires grew from about 180,000 people in 1869 to over 1.5 million by 1914, and Chicago and Sao Paulo saw similarly dramatic booms.
- International trade — the Americas became the world's breadbasket and mine, exporting wheat, beef, coffee, silver and copper to Europe and the USA in exchange for manufactured goods and capital.
- Inter-American trade — trade also grew between American nations themselves, though it stayed far smaller than trade with Europe, since most countries produced similar raw materials rather than goods each other needed.
Worked example — Argentina's rail boom: By 1914, Argentina had over 33,000 km of railway, most of it built and owned by British companies. That rail network let Argentina become one of the world's top beef and wheat exporters within a single generation — but it also meant British investors, not Argentines, controlled the profits and the routes.
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Fast growth is not the same as independent growth. This is where the biggest Paper 3 debate on this topic lives: did the Americas modernize on their own terms, or did they just trade one master for another?
Key term: neocolonialism and dependency: neocolonialism describes what many historians see happening here. Latin American nations were politically free after independence, but foreign companies and banks — mostly British, later American — owned the railroads, mines and utilities. dependency theory argues this locked Latin America into supplying cheap raw materials forever, while the profits and the decision-making stayed abroad.
Argument: genuine modernization
- Foreign capital built infrastructure (rail, ports) that Latin American governments could not have afforded alone.
- Export booms raised national income and government revenue in countries like Argentina, Brazil and Mexico.
- Local elites chose these policies deliberately, believing exports would fund future industrial development.
- The USA itself used foreign (mostly British) investment to industrialize in the 1800s — dependency was not unique to Latin America.
Argument: neocolonial dependency
- Rail networks were built to serve export routes to the coast, not to connect regions to each other or build a domestic market.
- Profits from mines and railroads flowed back to foreign shareholders in London and New York, not into local industry.
- Economies stayed narrow — reliant on one or two exports (Cuba's sugar, Chile's nitrates) — so a price crash abroad meant a crisis at home.
- Local elites (landowners, exporters) benefited hugely while ordinary workers and Indigenous communities saw little of the wealth.
Mexico under Porfirio Diaz (president 1876-1911) is the textbook case for this debate. Diaz welcomed foreign investment enthusiastically — American and British companies built railroads and controlled mining and oil.
Mexico's exports and rail network grew enormously under Diaz. But wealth concentrated in a small elite, foreign firms kept the profits, and rural poverty barely improved — a pattern of growth without real development that helped trigger the Mexican Revolution of 1910.
Exam tip — pick a side, with evidence: A "to what extent" essay on this topic rewards you for reaching a judgement, not just listing both views. A strong answer might argue that the label "neocolonialism" fits the pattern of foreign ownership and narrow exports, while also conceding that some real infrastructure and income growth did happen — genuine modernization AND dependency, unevenly, at the same time.
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Economic transformation needed workers, and the Americas did not have enough of them. Governments actively recruited migrants from overseas to fill farms, factories, mines and railroad gangs.
| Migrant group | Where they went | Why they came / were brought |
|---|---|---|
| Italians and Spaniards | Argentina, Brazil, USA | Fled rural poverty in Europe; recruited to work Pampas farms and coffee plantations |
| Eastern European Jews | USA (especially New York) | Fled pogroms and persecution in the Russian Empire |
| Chinese labourers | USA (railroads, mines), Peru, Cuba | Recruited (often under exploitative contracts) for railroad construction and plantation labour |
| Japanese migrants | Brazil, Peru, USA (West Coast) | Recruited from the 1890s–1900s to work coffee and sugar plantations |
This wave of immigration changed the cultural map of the Americas. Catholic Italian and Polish immigrants reshaped religious life in Protestant-majority US cities; Jewish immigrants built new synagogues and communities; Buddhist and Shinto traditions arrived with Japanese immigrants in Brazil and California.
Perspectives: welcome was not equal: Not every migrant group was treated the same. European immigrants to Argentina and the USA were generally welcomed as a source of "whitening" and modernization (a racist idea popular with elites at the time). Chinese and Japanese migrants, by contrast, faced open hostility — the US Chinese Exclusion Act (1882) banned nearly all Chinese immigration, showing how migration policy reflected racial hierarchies, not just labour needs.
The other side of this story is what migration and economic expansion did to the people already living on the land. As railroads and farms pushed into the interior, Indigenous peoples — Native Americans in the US West, Mapuche in Argentina and Chile, and others — were pushed off ancestral territory.
Land seized
Governments declared "frontier" land empty or unowned and opened it to migrant settlers and rail companies, even where Indigenous peoples already lived and farmed it.
Force used
Campaigns like Argentina's Conquest of the Desert (1878-1885) used the army to clear Indigenous groups from land wanted for European settlement.
Land use changed
Communal or seasonal Indigenous land use gave way to fenced private farms and ranches producing export crops.
Communities marginalized
Survivors were often pushed onto reservations or poorer land, with traditional economies and ways of life badly disrupted.
Seize the land, force out the people, farm it for export, marginalize the survivors.
So migration and land change were two sides of the same economic transformation: new arrivals gained opportunity in the Americas, often at the direct cost of the Indigenous peoples whose land it originally was.