What motives do you think contributed to geographical discoveries in the ancient world?

The main factor that the ancient world was actively developing geographical discoveries was the fact that until the formation of primitive communities and states, people left the territory of their habitat very little.
As a result of the fact that the population began to occupy large areas, the formation of trade and diplomatic relations between peoples and civilizations began.
In addition, the constant increase in the population led to the fact that new territories were required, as well as resources.