Venn Diagrams were first created in 1880 by mathematician John Venn for logic and philosophy. However, some say the roots of Venn Diagrams go back even further, all the way to the 1200s, with the first use by philosopher Ramon Llull of Majorca. Over the years, Venn Diagrams have grown in popularity in the business world as an important tool for brainstorming and strategic planning.
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