No, mountains and valleys.

700 bc and 1001bc

approximately what dates did ancient Greek civilization begin and end

quite millions years ago,and if it ended world would be still primitive.

The Mycenaean civilization, which produced the oldest texts known to have been written in Greek, began around 1600 B.C. Classical Greek civilization ended when the Rome conquered Greece in 2nd century B.C.

Which civilization contributed the most to the development of Greek civilization?

Mycenaean