Answer:
1. Establishment of democracy
2. Rules of Geometry
3. Outdoor drama, which later transformed into movies we watch today
Step-by-step explanation:
The three most important contributions made by the Hellenistic civilization are the following:
1. Establishment of democracy
2. Rules of Geometry
3. Outdoor drama, which later transformed into movies we watch today
Hellenistic civilization is a period of human development in the history of humans, which spans between 323 BCE to 33 BCE. It was characterized by the Greek civilization, which expanded to other areas, including the Mediterranean and Asian parts of the world.