They note how the economy is evolving over time and during that time this is mainly due to the industrial revolution that was occurring. But the economy was evolving to become profit-driven and create a large global market, which according to Marx and Engels brings with it new tyrannies. As the economy was becoming more industrialized, labor became similar due to new advanced technologies. Workers' work was becoming less extensive and less necessary, leaving the proletariat struggling to find and keep jobs. Goods were becoming much easier to produce, but as production became easier to accomplish, proletarians benefited even less from their labor. The economy was created by the labor of the proletariat, but the benefits of this labor were enjoyed only by the wealth of the bourgeoisie in the form of private income.