Before revision: The years following the Civil War brought a huge mismatch in the number of available men in the east (more than 600,000 killed in the war) and in the number of available women on the western frontier, where mostly men had migrated to pursue mining, fur trading, farming, logging, and exploring.
After revision: in the United StatesThe years following the Civil War brought a huge mismatch in the number of available men in the east (more than 600,000 killed in the war) and in the number of available women on the western frontier, where mostly men had migrated to pursue mining, fur trading, farming, logging, and exploring.