Ido
However two terrible events stopped the spread of the language: on August 3, 1914, Louis Couturat died in a car crash, the same day that Germany declared war on France. The Idist movement actually survived in neutral countries such as Switzerland (including the activity of Schneeberger, Secretary of the Ido Union or the International Linguo), and Sweden (with Ahlberg, editor of the idista magazine Mondo). The magazine Progreso stopped being published in 1914.