The steel spine that stitched a continent together and made time itself stand in line.
means A track of parallel steel rails on which trains run, or the whole system of such tracks, trains, and operations — and, as a verb, to rush or force something through with brutal speed and little fairness.
from A plain English compound: 'rail' plus 'road.' 'Rail' descends from Latin 'regula,' a straight bar or rule (a cousin of 'regular' and 'ruler'), arriving through Old French as a word for a horizontal bar or fence. 'Road' shares deep roots with 'ride,' originally meaning a journey on horseback. Stitched together in the early 19th century as iron tracks spread, the word soon grew a darker verb: to 'railroad' someone — convict, dismiss, or push them through a process — borrowing the locomotive's image of unstoppable, no-stops momentum bearing down on the helpless.