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This lesson provides detailed case studies of major migration flows, examining their causes, patterns, and impacts on both source and host countries. These case studies are essential for supporting theoretical arguments in AQA A-Level Geography exam responses.
Migration from Mexico to the United States is one of the largest and most studied migration flows in the world. Mexican-born immigrants in the USA numbered approximately 10.7 million in 2022 (Pew Research Center), though this figure has been declining from a peak of 12.8 million in 2007.
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When Poland joined the EU in May 2004 (A8 accession), the UK was one of only three EU countries to grant immediate labour market access. This triggered one of the largest peacetime migration flows in European history.
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