It is Cornelius Vanderbilt --Apex :)
Railroads
The arrival of railroads.
Railroads; the transcontinental railroad was essential to the development.
Railroad.Vanderbilt controlled all the railroads by the 1800s. He amassed quite a lot of wealth through the system.
Railroads
Railroads
The arrival of railroads.
The names are all 1800s Railroads: The Short Line Railroad; The Reading Railroad; and the Pennsylvania Railroad.
Railroads; the transcontinental railroad was essential to the development.
Railroad Builders received loans and grants from the federal government.
Railroad.Vanderbilt controlled all the railroads by the 1800s. He amassed quite a lot of wealth through the system.
The North used railroads for importing goods.
Railroads
It changed nothing.
Railroads
The B&O Railroad's tracks ran throughout the small town. (one railroad with singular possessive)The railroads' officers were keen to expand rail service in the 1800s. (more than 1 railroad, and plural possessive. This also means that "officers" indicates groups of men, one group per railroad company, but here used as a generic plural, no possessive.)The railroad's conductor got married. (One specific railroad as singular possessive for one specific conductor.)The railroads' conductors were mostly single men. (plural possessive, plural railroad companies with plural conductors).
In the early 1800s, around mines & quarries.