So the national associations tried to build up an international organizational level by their own. A first attempt were the "rajtigitaj delegitoj" of the congresses in 1911 and 1912 (not to be confused with the UEA "delegitoj"); an "Internacia Unuiĝo de Esperantistaj Societoj" (International Union of Esperanto associations, 1913/1914) was a second attempt. This string in the evolution ceased in 1914 with the breakout of World War I, which forced the movement as a whole to pause many of its activities.