1768 : 1768 James Watt : Steam engine 1825 : 1825 First railroad for passengers 1848 : 1848. Karl Marx. Comunist Party Manifesto 1858 : 1858 J.-B. Godin familistère of Guise 1891 : 1891. Encycl Rerum Novarum 1884 : 1884. Trade union law in France 1904 : 1904. Work day 10h max.