In the
Greek Dark Ages that followed the collapse of the
Mycenaean civilization, significant numbers of Greeks had emigrated to
Asia Minor and settled there. These settlers were from three tribal groups: the
Aeolians,
Dorians and
Ionians. The Ionians had settled about the coasts of
Lydia and
Caria, founding the twelve cities which made up
Ionia. The cities of Ionia had remained independent until they were conquered by the famous Lydian king
Croesus, in around 560 BC. The Ionian cities then remained under Lydian rule until Lydia was in turn conquered by the nascent
Achaemenid Empire of
Cyrus the Great. The Persians found the Ionians difficult to rule. Elsewhere in the empire, Cyrus was able to identify elite native groups to help him rule his new subjects—such as the priesthood of Judea. The Persians thus settled for the sponsoring a
tyrant in each Ionian city, even though this drew them into the Ionians' internal conflicts. Furthermore, a tyrant might develop an independent streak, and have to be replaced. Aristagoras's uncle
Histiaeus had accompanied Darius on campaign in 513 BC, and when offered a reward, had asked for part of the conquered
Thracian territory. Although this was granted, Histiaeus's ambition alarmed Darius's advisors, and Histiaeus was thus further 'rewarded' by being compelled to remain in
Susa as Darius's "Royal Table-Companion". The island of
Naxos, part of the
Cyclades group in the
Aegean Sea, was also in this period affected by political turmoil. Naxos had been ruled by the tyrant
Lygdamis, a protege of the Athenian tyrant
Peisistratos, until around 524 BC, when he was overthrown by the
Spartans. After this, a native aristocracy seems to have flourished, and Naxos became one of the most prosperous and powerful of the Aegean islands. Despite its success, Naxos was not immune to class tensions and internal strife, and shortly before 500 BC, the population seized power, expelling the aristocrats and establishing a democracy. In 500 BC, Aristagoras was approached by some of the exiles from
Naxos, who asked him to help restore them to the control of the island. Seeing an opportunity to strengthen his position in Miletus by conquering Naxos, Aristagoras approached the
satrap of Lydia,
Artaphernes, with a proposal. If Artaphernes provided an army, Aristagoras would conquer the island in Darius's name, and he would then give Artaphernes a share of the spoils to cover the cost of raising the army. Furthermore, Aristagoras suggested that once Naxos fell, the other Cyclades would also quickly follow, and he even suggested that
Euboea could be attacked on the same expedition. ==Prelude==