In France, a law is passed, under the driving force of member of
parliament Pierre Waldeck-Rousseau, legalising trades unions.
Citation:
Editors. "Trade unions in France are legalised".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18889, accessed 23 May 2013.]