The interwar period of independence gave birth to the development of Lithuanian press, literature, music, arts, and theater as well as a comprehensive system of education with Lithuanian as the language of instruction. The network of primary and secondary schools was expanded and institutions of higher learning were established in Kaunas. Lithuanian society remained heavily agricultural with only 20% of the people living in cities. The influence of the Catholic Church was strong and birth rates high: the population increased by 22% to over three million during 1923–1939, despite emigration to South America and elsewhere.
