Which of these language products was the first to implement a subscription model with adaptive machine learning that customized lessons based on user performance?

The language industry has seen revolutionary products that transformed how we write, speak, and communicate across borders. From groundbreaking dictionaries to innovative language learning platforms, certain products have made lasting impacts on linguistic accessibility and evolution. This poll tests your knowledge of influential language products that shaped modern communication. Can you identify which famous product made history in the language industry?

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Rosetta Stone (1992)
Duolingo (2011)
Babbel (2007)
Memrise (2010)