Which retail promotional campaign holds the Guinness World Record for the largest increase in online sales within a 24-hour period?

Test your knowledge about the most extraordinary retail and marketing world records! In the competitive landscape of global retail, some campaigns and promotions have achieved such phenomenal success that they've earned their place in the record books. Can you identify which marketing strategy broke all expectations and made history?

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• Amazon Prime Day 2019 (289% increase)
• Alibaba's Singles' Day 2018 (418% increase)
• Black Friday 2020 global sales (372% increase)
• Cyber Monday 2021 tech promotions (326% increase)

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