In ancient greece, euclid contributed to a better understanding of biology. chemistry. mathematics. technology.

The correct answer is: "Mathematics".

Euclid lived in Ancient Greece (around 300 BC), he was a mathematician and he is considered the father of Geometry. His foundings on perspectives, conic sections, spherical geometry, number theory or rigor had been in maths textbooks until the 20th centuries.

answer; obscene;

answer; to save lives and protect property;