Which retail company famously used the 'cluster approach' for international expansion, opening multiple stores in a geographic region to maximize supply chain efficiency before moving to new markets?

The world's most successful retailers have mastered the art of geographic expansion, transforming local shops into global empires. This trivia tests your knowledge about a famous retail expansion strategy that revolutionized how companies think about international growth. Can you identify which retail giant pioneered this particular approach to conquering new markets?

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Walmart - entering Mexico in 1991 and clustering stores near distribution centers
IKEA - focusing on one European country at a time with multiple stores before expanding elsewhere
Carrefour - establishing regional hubs in South America before expanding within each country
Aldi - using a border-hopping strategy starting from Germany to neighboring countries