All of Russia began to use Russian as the language of literature, education, and official communication. Until the 20th century, only the upper classes and people in cities spoke the literary language. Russians from the countryside continued to speak their local dialects. In the 20th century, all children were required to go to school. Many people had radios and televisions, which helped to spread Standard Russian. By the mid-20th century, Russian dialects had mostly disappeared. Standard Russian replaced them almost completely especially to talk to people from different oblasts.