What was the evil okonkwo committed against the earth goddess?

Okonkwo committed an act against the earth goddess by inadvertently killing a clansman during a funeral ceremony, which was considered a female crime or a crime of inadvertence. This act was seen as a violation of the sacredness of the earth and the community's moral and spiritual laws. As a result, he was exiled for seven years, highlighting the seriousness of his offense against both the goddess and his tribe's customs. This incident reflects the broader themes of fate and the consequences of one's actions in Chinua Achebe's "Things Fall Apart."