Athens has been inhabited from Neolithic times, possibly from the end of the 4th millennium BC. By 1400 BC the settlement had become an important center of the Mycenaean civilization and the Acropolis was the site of a major Mycenaean fortress whose remains can be recognised from sections of the characteristic Cyclopean walls. On the summit of the Acropolis, below the later Erechtheion, cuttings in the rock have been identified as the location of a Mycenaean palace. Between 1250 and 1200 BC a staircase was built down a cleft in the rock to reach a protected water supply, in a similar way to ones at [[Mycenae. Unlike other Mycenaean centers, such as Mycenae and Pylos, we do not know whether Athens suffered destruction in about 1200 BC, an event often attributed to a Dorian invasion, and the Athenians always maintained that they were "pure" Ionians with no Dorian element. However, Athens, like many other Bronze Age settlements, went into economic decline for around 150 years following this.
Iron Age burials, in the Kerameikos and other locations, are often richly provided for and demonstrate that from 900 BC onwards Athens was one of the leading centres of trade and prosperity in the region; as were Lefkandi in Euboea and Knossos in Crete. This position may well have resulted from its central location in the Greek world, its secure stronghold on the Acropolis and its access to the sea, which gave it a natural advantage over inland rivals such as Thebes and Sparta.
According to legend, Athens was formerly ruled by kings (see Kings of Athens), a situation which may have continued up until the 9th century BC. From later accounts, it is believed that these kings stood at the head of a land-owning aristocracy known as the Eupatridae (the 'well-born'), whose instrument of government was a Council which met on the Hill of Ares, called the Areopagus and appointed the chief city officials, the archons and the polemarch (commander-in-chief).
Before the concept of the political state arose, four tribes based upon family relationships dominated the area. The members had certain rights, privileges, and obligations:
Common religious rights.
A common burial place.
Mutual rights of succession to property of deceased members.
Reciprocal obligations of help, defense and redress of injuries.
The right to intermarry in the gens in the cases of orphan daughters and heiresses.
The possession of common property, an archon, and a treasurer.
The limitation of descent to the male line.
The obligation not to marry in the gens except in specified cases.
The right to adopt strangers into the gens.
The right to elect and depose its chiefs.
During this period, Athens succeeded in bringing the other towns of Attica under its rule. This process of synoikismos – the bringing together into one home – created the largest and wealthiest state on the Greek mainland, but it also created a larger class of people excluded from political life by the nobility. By the 7th century BC social unrest had become widespread, and the Areopagus appointed Draco to draft a strict new code of law (hence the word 'draconian'). When this failed, they appointed Solon, with a mandate to create a new constitution (in 594 BC).