Wow. The list of contributions that the greco-roman civilization made to modern society is practically
Greek
Astronomy, star mapping
Medical beliefs, hypocratic oath
Sailing skills
Fishing skills
Government (democracy)
Inventions (ex: lever)
Mathematics, famous mathematicians created aspects like geometry
Art (greek styles of mosaic, pottery, sculpture)
Music (Many greek instruments like lyre were changed into common present day instruments)
Architecture (columns, temple style, friezes, etc.)
Theater
Romans
Aquaducts base of common watering systems today
Architecture (amphitheater, colosium, etc.)
Military strategy
Government (republic)
Astronomy planet names
Roads
Engineering making building more stable/efficient
Literature
