The basic principle of Marxism is, there should be equality. Karl Marx believed in a utopian society wherein people are equal and classless. But in order to achieve this utopian society, there are three phases that should happen. First, a revolution should take place. This is because of class stuggle. The rich often times exploit the working class and inequal distrubution of goods. Second, a new leader or dictator must lead. In order to achieve the utopian society, they must rid off the capitalist who are in the government. And lastly, a new government be created . They must create a government that follows the principles of socialism or equality.
To my knowledge, the correct answer among all of the given choices is C.) Steam. If I'm not mistaken, this was the time that more trains came into use.
I hope this is the answer you were looking for and that it helps!! :)
