What impact did railroads have on cities across the united states at the turn of the twentieth century?

Travel from place to place now became easier with the number of tracks that connected the states with each other.  Apart from that, transport of products was now easier resulting in the increase of business all over the country thanks to the railroads.

earlier philosophers whose work influenced the enlightenment included bacon, descartes, locke, and spinoza. the major figures of the enlightenment included beccaria, diderot, hume, kant, montesquieu, rousseau, adam smith, and voltaire. it spread the ideas of the enlightenment across europe and beyond.