Encyclopedia Britannica

O padrão mundial em conhecimento desde 1768

Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.

Encyclopædia Britannica, the oldest English-language general encyclopaedia. The Encyclopædia Britannica was first published in 1768, when it began to appear in Edinburgh, Scotland.

Since its founding, the Encyclopædia Britannica has relied upon both outside experts and its own editors with various subject-area proficiencies to write its entries. Those entries are then fact-checked, edited, and copyedited by Britannica editors, a process intended to ensure that the articles meet Britannica’s long-held standards for readability and accuracy. Moreover, that same team of editors regularly revise and update existing articles to reflect new developments in those realms of knowledge.

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