Why did the Greek city state never form an empire?

Ortigia, the heart of Syracuse.

The temple of the imperial family in Nimes.

Vestiges of the Greek city of Oblia (Hyeres) which isn’t very far from Marseille.

Hello, I have a question about astral projection. I started to get interested in this a little while after my mum passed in april. I thought I may be able to see her and speak with her if I managed to achieve astral projection. Since this interest, every time i sleep on my back I go into sleep paralysis. However, I cant progress into astral projection because it is very scary for me as I feel like I'm suffocating when this happens. I panic and force myself to wake up. This only ever happened about once a year before this. It sometimes lasts a long time. This has happened about 3 times per week since my mum died, as mentioned on a previous post. I no longer try to go into it anymore(due to the suffocating feeling), but it still happens. I read that sleep paralysis is the pathway to astral projection. Why has this started to happen so frequently since simply taking an interest in it? Is this connected to the afterlife? I am concerned about it as I now cannot seem to stop this happening. Could it be my mum trying to communicate? Im asking due to more knowledge around this in this group.

A restored Roman domus in Aix-en-Provence.

The circus in Arles

The Greek theater in Syracuse

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They did. Athens or Syracuse were the heads of confederation of cities. But the Greeks never had a heavy interest in territorial domination, what structured their action were business network. This was clearly illustrated by the history of Massiglia. The Greeks acquired lands in what is now Marseille, and a few places where their farms mixed with local farmers. The cities were just places in which authorized citizens made decisions and worshiped the gods. They mostly traded goods and artifacts, some of which were very expensive. For controlling the navigation on the Rhone river, they only set a few military positions at the critical points. When the Romans allied with Marseille, the traded items become in the major part slaves whose travel couldn’t be differed because the traffickers had to feed them. So the Romans created three colonies Aquea Sextia (Aix-en-Provence), Arelate (Arles) and Nimosis (Nime) where they settled military retired veterans to secure the area.

Massilia in the ancient times.