How did the government evolve in Athens? What different types of government were used?

In Athens, they used democracy as their type of government. And democracy in Ancient Greece was very direct. Meaning that all the citizens voted on all the laws. Rather than vote for representatives, like we do, each citizen was expected to vote for every law. They did have officials to run the government, however. Most of these officials were chosen by a lottery. So every citizen had a chance, regardless of their popularity or wealth, to become an official. A few key positions were voted on, such as the treasurer and the 10 generals who ran the army. In order to vote, you had to be a citizen. However, not everyone who lived in Athens was a citizen. Only men who had completed their military training were counted as citizens.

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the answer is migration