Which retailer holds the Guinness World Record for the largest single-day sales event in history?

The retail world is full of fascinating world records - from the largest stores ever built to the most expensive advertising campaigns in history. Test your knowledge about these retail extremes that have made their way into the record books. Do you know which retail innovations and marketing strategies have broken boundaries and set new standards in the industry?

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Alibaba's Singles' Day (November 11) with $38 billion in sales in 24 hours (2019)
Amazon's Prime Day with $22 billion in sales in 24 hours (2020)
Walmart's Black Friday with $27 billion in sales in 24 hours (2018)
JD.com's 618 Shopping Festival with $31 billion in sales in 24 hours (2021)