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. The determination of parameters of the Earth's ellipsoidis quite a difficult task that gives no rest to scientists to thisday. One of the more famous works is the Struve Geodetic Arc, which was stretched fromthe Black Sea to the Arctic Ocean by employing the method of a triangulationnetwork and which is included in the UNESCO World Heritage Site list. However, untilthis project was implemented, many steps of scientific and technologicaladvancement had to be taken, the entirety of which created the conditionsfor the realization of this project. A study of the method of triangulationmeasurements, the development of geodetic devices, the statepolitics of the Russian Empire in the 17th–19th centuries in the field ofgeodesy, and the development of triangulation during this period arepresented in the article. Moreover, a study of the origins of the StruveGeodetic Arc project that led to such a grand result is conducted. Theobtained results reveal that certain factors predeterminedthe favourable conditions for the successful execution of the project ofthis geodetic arc.

The Struve Geodetic Arc: the development of the triangulation, technical possibilities, and the initiation of the project