Most churches have for a long time showed that they want to be tolerant with other belief systems, and in the 20th century Christian ecumenism (the uniting of Christians from different backgrounds), advanced in two ways. One way was more cooperation between groups, such as the Edinburgh Missionary Conference of Protestants in 1910, the Justice, Peace and Creation Commission of the World Council of Churches started in 1948 by Protestant and Orthodox churches, and similar national councils, for example the National Council of Churches in Australia with Roman Catholics.