Do Now 2/16

In the days of Kecrops and the first kings, down to the reign of Theseos, Attica was divided into communes, having their own town halls and magistrates. Except in case of alarm, the whole people did not assemble in council . . . but administered their own affairs, and advised together in their several townships.

—The History of the Peloponnesian War, Thucydides, ca. 404 BC

Which form of government developed from these circumstances?