Why weren’t all the Athenians happy with Solon’s rule?

This is due to the fact that Solon’s reforms affected the interests of the aristocracy, in connection with which, she lost income and benefits. One way or another, but the Athenians generally positively perceived such changes, since they were based on equality in society. This is how democracy arose here.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.