Final answer:
Eratosthenes' work is associated with the branch of science called Geography. He made significant contributions to the field, including devising systems of longitude and latitude and accurately measuring the size of the Earth.
Step-by-step explanation:
Eratosthenes' work is associated with the branch of science called Geography. He was an early Greek scholar who lived between 276 and 194 B.C.E. and made significant contributions to the field of geography. He devised one of the first systems of longitude and latitude, calculated the size of the Earth with surprising precision, and created maps that attempted to accurately depict distances and relationships between places.