20th-century history of the Catholic Church in the United States greater frequency. 20th-century history of the Catholic Church in the United States The 20th-century history of the Catholic Church in the United States was characterized by a period of continuous growth for the Church in the United States, with Catholics progressively evolving from a small minority to a large minority. In 1900 the Catholic population was 10 million, under the control of 14 Archbishops, 77 bishops, and 12,000 priests . The community had built 10,000 churches, of which two-thirds had resident pastors. Catholic schools educated nearly 1,000,000 children and youth. Catholics were heavily concentrated in the industrial and mining centers
Catholic Church previously adopted Arian Christianity, eventually adopted Catholicism to ally themselves with the papacy and the monasteries. In the 7th and 8th centuries, expanding Muslim conquests following the advent of Islam led to an Arab domination of the Mediterranean that severed political connections between that area and northern Europe, and weakened cultural connections between Rome and the Byzantine Empire. Conflicts involving authority in the church, particularly the authority of the Bishop of Rome finally culminated in the East–West Schism in the 11th century, splitting the church into the Catholic and Orthodox Churches. Earlier splits within the church occurred after the Council