By the time two new international treaties in early 1846 and early 1848 officially settled new western coastal territories on the United States and spurred a large upsurge in migration, the days of mountain men making a good living by fur trapping had largely ended. This was because the fur industry was failing due to overlapping. Fortuitously, America's ongoing western migration by wagon trains with the goal of claiming cheap lands in the west was building rapidly from a trickle of settlers from 1841's opening of the Oregon Trail (now a wagon road) to a flood of emigrants headed west by 1847–49 and thereafter well into the later 1880s.