Railroads, migration and new ideas: modernizing the Americas (1865-1929)

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The transcontinental railroad, connecting the Atlantic and Pacific coasts and opening the west to settlement and trade.

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Britain wanted cheap Argentine beef, wheat and wool; British-financed lines were built to move these exports from the pampas to Buenos Aires.

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A country stays politically independent but remains economically controlled by a foreign power, e.g. Argentina's British-financed export economy.

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An economy exports cheap raw materials and imports expensive manufactured goods, so wealth flows to the stronger foreign economy.

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Immigration (from Europe), internal migration (westward settlement), and emigration — each with different causes and effects.

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Loss of land, forced relocation onto reservations, and destruction of the bison herds many Plains nations depended on.

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The belief that US expansion across the continent was natural and justified — used to defend taking indigenous and Mexican land.

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Positivism claimed societies progress through science and order; social Darwinism twisted evolution to claim some races/nations were naturally superior, justifying inequality and expansion.

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A Latin American (especially Mexican and Andean) movement romanticizing indigenous heritage as part of national identity, often without giving indigenous people real political power.

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US railroads built an internal industrial economy; Argentine railroads served export agriculture and stayed economically dependent on Britain.

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Railroads fed industrial growth, which drew people off farms and into fast-growing industrial cities — urbanization.

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Because description alone (just the tracks) scores low; explaining why they were built and what changed afterward shows analysis, which examiners reward.