Interlingue
World War Two began in 1939, and this stopped the publications of both Cosmoglottas until 1940. This was when Cosmoglotta was most active. One Cosmoglotta A or B was published every month between January 1937 and September 1939 when the war started. Then one edition was published every month from September 1941 to June 1951. During the Second World War, only Switzerland and Sweden were neutral countries. Because of this, only the Occidentalists in these countries could carry on their activities.