One important product of this liberalization was ecumenism, expressed in merger talks with the "northern" Presbyterian Church, known as the United Presbyterian Church in the United States of America after 1958 (despite the common reference as "northern," the UPCUSA had congregations in all 50 states by the 20th century, with most of its southern churches the result of a 1906 merger with most of the Cumberland Presbyterian Church or the affiliation of African-American churches in the South Atlantic states after the Civil War). In 1946, with cooperation of three other denominations, it formed the United Andean Indian Mission, an agency that sent missionaries to Ecuador. Among some of the other liberalizing trends were the ordination of women in 1964, the ratification of a pro-choice position on abortion by the General Assembly, and the rejection by that assembly of the plenary verbal inspiration of the Bible, considered by conservatives as a touchstone dogma.