Conversation so far:
How did expansion from the core of Ancient Macedonian civilization take place?
The early stages of Macedonian expansion were militaristic, subduing or expunging populations from a large and varied area.
What area did the Ancient Macedonians expunge populations from?
The Macedonians gained control over Mygdonia, Edonis, lower Paeonia, Bisaltia and Crestonia.

Question: Why did they do this?
Self-contained rewrite: Why did the Ancient Macedonians take control of large areas of land?