The background of KKE has roots in more than 60 years of small socialist, anarchist and communist groups. These groups were mainly in industrialized areas. They followed the example of the Paris Commune and the 1892 Chicago workers' movement for the eight-hour working day. These groups pushed for the unification of Greek workers into trade unions, the implementation of an eight-hour day in Greece and better salaries for workers. Inspiration came from the Paris Commune and the communist revolutionary efforts at the beginning of the century. The destruction almost 20 years of wars brought upon the Greek workers also played a role. As a result, a unified Social-Communist party was founded in Greece.