However, as a result of their broad definitions, the Big Five personality traits are not nearly as powerful in predicting and explaining actual behavior as are the more numerous lower-level, specific traits.
The history of socialism has its origins in the French Revolution of 1789 and the changes brought about by the Industrial Revolution, although it has precedents in earlier movements and ideas.
The Communist Manifesto was written by Karl Marx and Friedrich Engels in 1848 just before the Revolutions of 1848 swept Europe, expressing what they termed ' scientific socialism '. In the last third of the 19th century in Europe social democratic parties arose in Europe drawing mainly from Marxism.