British colonial rule introduced Western elements of culture to Burma. Burma's education system is modelled after that of the United Kingdom. Colonial architectural influences are most evident in major cities such as Yangon. Many ethnic minorities, particularly the Karen in the southeast and the Kachin and Chin who populate the north and northeast, practice Christianity. According to the The World Factbook, the Burman population is 68% and the ethnic groups constitute 32%. However, the exiled leaders and organisations claims that ethnic population is 40%, which is implicitly contrasted with CIA report (official US report).