I was amazing when I had swallowed 《The men who built America》.In just 35 years the nation has changed faster than anyone could imagine.I encounter Vanderbilt,Rockefeller,Carnegie and Morgan.They all used innovation and ingenuity to create a corporate empire unlike the world has ever seen. Vanderbilt stopped at nothing to connect the nation via railroads.  Rockefeller said "You call it monopoly,I call it enterprise." Rockefeller used his trademark ruthlessness to light homes from coast to coast.Carnegie said :"Nothing is impossible." Cities are expanding to the sky built on the strength of Andrew Carnegie's  steel. And under J.P.Morgan's  control,electricity is starting to power the country. When we look back the history we could say :"We're  in the early days of a new industry.  America has grown into one of the most powerful countries on the planet fuelled by a group of visionaries who are building a better future. But the incredible advancements come with a price.”