Who was solon and what was his importance to democracy?

By the early 6th century B.C. social tensions in Athens had become acute, pitting the poorer citizens against rich and powerful landowners. Many citizens were reduced to the status of share croppers, and others had actually sold themselves into slavery to meet their debts. To resolve the crisis the Athenians appointed Solon as archon (magistrate) to serve as mediator and lawgiver. Plutarch and Aristotle describe in some detail the constitution devised by Solon, who then went into voluntary exile to avoid being pressured into amending this legislation.
Solon canceled most debts and freed those Athenians who had been enslaved, but he refused to redistribute property or to deprive the aristocracy of most of the political power.