Which language learning platform's 2019 influencer campaign created the viral hashtag #PolyglotChallenge that resulted in over 500 million views and a 78% increase in new user sign-ups?

Influencer marketing has revolutionized many industries, including language learning and linguistics. Major language learning apps and platforms strategically partner with social media personalities to promote their products. These collaborations have significantly shaped how people discover and engage with language learning tools. This poll tests your knowledge about a groundbreaking influencer marketing campaign that changed the language learning landscape.

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Duolingo's owl mascot campaign with YouTube educators
Babbel's partnership with travel influencers across 12 countries
Rosetta Stone's collaboration with business professionals
Memrise's campaign featuring polyglots on TikTok