Merger
Around this time, the UPCNA sought mergers with various other Reformed churches and finally agreed to merge with the much larger PCUSA in 1958, the year of its centennial, to form the UPCUSA. Most UPCNA-heritage congregations entered into the present Presbyterian Church (USA) (which succeeded the UPCUSA in 1983), but some of more evangelical conservative orientation departed in the 1970s to denominations such as the Presbyterian Church in America (founded 1973) and the Evangelical Presbyterian Church (1981).
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