The Unification Church of the United States is the branch of the Unification Church in the United States. It began in the late 1950s and early 1960s when missionaries from South Korea were sent to America by the international Unification Church's founder and leader Sun Myung Moon. It expanded in the 1970s and then became involved in controversy due to its theology, its political activism, and the lifestyle of its members. Since then, it has been involved in many areas of American society and has established businesses, news media, projects in education and the arts, as well as taking part in political and social activism, and has itself gone through substantial changes.