You can talk about some material used for buildings for the science sentence, and use math to help organize marching soldiers to war, and say something about like finding a new type of medicine?
Medicine -Hippocrates was called "father of modern medicine" and he was one of the first doctors who created an oath (Hippocratic oath) still used by medical students graduating
Science -observed all matter is made of atoms -after Athens defeated Persia they became the center of Greek culture and science
Math -Archimedes figured out the lever and pulleys system - Pythagorus created the Pythagorean Theorum (a^2+b^2=c^2) -mathemetician Euclia wrote a book called "The Elements" used to teach geometry.
Their religion, they devoted their lives to sacrifice even their kids to please their gods, which would in turn guide them through their everyday lives from crop growing to economy and buisiness