When did the earliest roots of scientific thinking emerge in ancient Egypt and Mesopotamia?
The earliest roots of scientific thinking emerged during the third and second millennia before the common era. Ancient Egyptians developed a decimal number system and used the 3-4-5 right triangle to rebuild fields and construct rectilinear structures. Babylonian astronomers recorded the motions of stars and planets on thousands of clay tablets to predict the appearances and disappearances of the moon and planets.