Which famous dictionary brand was endorsed by Noah Webster's heirs when they sold exclusive rights to the Webster name in 1843, creating one of the earliest and most influential linguistic brand mergers?

Dictionaries are fundamental tools in language study, but their development often involves fascinating product decisions. Major dictionary brands have interesting histories, endorsements, and market strategies that have shaped how we access language resources today. Test your knowledge of the business and product side of these linguistic authorities!

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Merriam-Webster
Oxford University Press
Houghton Mifflin Harcourt (American Heritage)
Collins