Polyconic projection was invented by:

Question

Accepted Answer

Polyconic projection was invented by Ferdinand Hassler.

**Explanation:**

*   **Why Option 1 (Ferdinand Hassler) is correct:** Ferdinand Hassler, a Swiss-American geodesist, is credited with the invention of the Polyconic projection. He developed it in the early 19th century while working as the first Superintendent of the U.S. Coast Survey (now the National Ocean Service). The Polyconic projection was specifically designed to map the United States with minimal distortion across its large east-west extent. Hassler's work was instrumental in the accurate mapping of the American coastline.

*   **Why Option 2 (Rigbert Bonne) is incorrect:** Rigbert Bonne was a French cartographer known for his work on map projections, but he is most associated with the Bonne projection, not the Polyconic projection. While both are conic projections, they have distinct characteristics and were developed by different individuals.

*   **Why Option 3 (G. S. Bachhan) is incorrect:** There is no widely recognized cartographer or geographer named G. S. Bachhan associated with the invention or development of map projections, including the Polyconic projection. This option appears to be incorrect based on available historical and cartographic records.

*   **Why Option 4 (J. V. Nicolci) is incorrect:** Similar to Option 3, there is no readily available information linking a cartographer or geographer named J. V. Nicolci to the invention or significant development of the Polyconic projection or other well-known map projections. Therefore, this option is incorrect.