What did renaissance map makers base their maps on

Answer

Renaissance map makers based their maps on a combination of existing maps, astronomical observations, mathematical calculations, and information gathered by explorers and travelers.

Q: Who were the Renaissance map makers? A: Renaissance map makers were cartographers who worked in Europe during the Renaissance period, which lasted from the 14th to the 17th century.
Q: What did Renaissance map makers use to base their maps on? A: Renaissance map makers based their maps on a combination of existing maps, astronomical observations, and mathematical calculations. They also used information gathered by explorers and travelers.