A "mail-order bride" situation, such as that in "Westward the Women", was not uncommon in the developing USA even into the early years of the twentieth century. Once the telegraph lines, the mails, and the railroads crossed the continent, it was fairly easy for people seeking mates to communicate and arrange for marriages, many or most of them based more on economics than romance. Farming and small town communities needed married couples to run enterprises, raise children, bring decency and order to the sort of towns which had not much of either. Men who were tired of living wild, women who wanted families, prostitutes who wanted lives with meaning and dignity, all were candidates for the adventure of mate-seeking at a distance.
The men in "Westward the Women" who put up the money for the wagon train to bring the women from the East were California settlers who found farming much more steady than goldseeking, once the dust had settled from the Gold Rush of 1849. Because so many men had rushed in from the East by themselves, there was a shortage of "good" women who spoke their language (the Mexican ladies, now Americans without moving anywhere since California became a state in 1850, being spoken for by Mexican men).Conversely, the Rush had left a shortage of marriageable men back East. Many women who were widows, factory workers, domestic servants, teachers, or show girls wanted futures which would leave them with something to show for lifetimes of hard work....and maybe a little romance along the way, if they were lucky.
BTW: In this story, the ladies choose the men, not vice versa.