Which product holds the Guinness World Record for the 'Most successful advertising slogan of the 20th century'?

Test your knowledge about famous product marketing campaigns and retail innovations that have broken world records! The marketing world has seen some incredible achievements that have earned their place in the Guinness World Records. From the largest product displays to the most viewed commercials, these record-breaking marketing feats have shaped consumer culture and demonstrated the power of innovative brand strategies.

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• De Beers' 'A Diamond is Forever'
• Nike's 'Just Do It'
• Coca-Cola's 'The Pause That Refreshes'
• McDonald's 'I'm Lovin' It'

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