Which of the following statements best describes Thales of Miletus's contributions to geography and mathematics?
1
He introduced the first sundial to measure time based on the sun’s position.
2
He created the earliest known world map placing Greece at its center.
3
He was the first to propose the spherical shape of the Earth using deductive reasoning.
4
He developed fundamental geometric theorems, such as the circle's division by a diameter and similar triangles' proportionality.