Cartographers Labeling Unknown Territory as “Terra Incognita”

When cartographers couldn’t reach a location to map and record it, they labeled it as “terra incognita” which means “unknown land” in Latin, stemming from the term “terra” which means “Earth” and “incognita” which means “unknown” stemming from the term “in” meaning “not” and “cognitus” meaning “known”. This expression was first used in Ptolemy's Geography written in 150 AD. The term was reintroduced during the 15th century from the rediscovery of Ptolemy’s work during the Age of Discovery...


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