It was originally supposed to be held in Germany in 1899 , but difficulties with the German authorities prevented this .
The 5th International Socialist Congress of the Second International era was held in Paris from September 23 to 27 in Paris .
International Socialist Congress was originally supposed to be held in Germany in 1899 , but difficulties with the German authorities prevented this .
The 5th International Socialist Congress of the Second International era was held in Paris from September 23 to 27 in Paris .