Kenya's first system of education was introduced by British colonists. After Kenya's independence on 12 December 1963, an authority named the Ominde Commission was formed to introduce changes that would reflect the nation's sovereignty. The commission focused on identity and unity, which were critical issues at the time. Changes in the subject content of history and geography were made to reflect national cohesion. Between 1964 and 1985, the 7–4–2–3 system was adopted – seven years of primary, four years of lower secondary, two years of upper secondary, and three years of university. All schools had a common curriculum.