abstract:Unitarian Universalist Association (UUA), in full the Unitarian Universalist Association of Congregations in North America, is a liberal religious association of Unitarian Universalist congregations formed by the consolidation in 1961 of the American Unitarian Association and the Universalist Church of America.Harvard Divinity School: Timeline of Significant Events in the Merger of the Unitarian and Universalist Churches During the 1900s Both of these predecessor organizations began as Christian Unitarian and Christian Universalist denominations.