Migration and Early Settlement

From the 1830s, increasing numbers of white Americans travelled west in search of farmland, wealth or religious freedom. They crossed the Great Plains towards destinations such as Oregon and California. This was not movement into an empty country: Indigenous peoples already lived on and used these lands.

Migration involved both push factors, which encouraged people to leave their existing homes, and pull factors, which attracted them elsewhere. The economic crash of 1837 caused banks and businesses to fail in the eastern United States. People lost savings and employment, while falling wages made life harder. These problems pushed some families to seek a fresh start.

Reports of fertile farmland in Oregon provided a pull factor. Traders’ accounts suggested that farmers could grow more crops and face less competition for land than in the East. Economic hardship and the promise of farmland reinforced each other: Oregon seemed especially attractive to someone whose prospects at home had deteriorated.

The Oregon Trail made migration more practical

Wanting to move west was not enough: families needed a route that could carry people, provisions and possessions across a continent. The Oregon Trail, used by covered wagons from 1836, helped make this possible. It ran roughly 2,000 miles from Missouri to Oregon, crossing the Great Plains and passing through the Rocky Mountains at South Pass.

Travelling overland offered an alternative to the long sea journey around South America. Wagons allowed migrants to carry supplies and belongings for their new lives. Missionaries also used the trail to reach Indigenous communities whom they hoped to convert to Christianity. Published descriptions and guides, including those associated with John Frémont’s explorations, made the journey seem more achievable.

Nevertheless, a recognised route was not a safe or easy route. The journey usually took around five to six months. Migrants travelled in wagon trains, sharing work and support, but faced difficult river crossings, shortages of food and water, and diseases such as cholera. Poor sanitation helped disease spread. Mountains created a further danger: delays could mean reaching high ground after winter snow had begun.

Manifest Destiny gave expansion a sense of mission

Manifest Destiny was the belief that white Americans had a God-given right and duty to spread across North America. Supporters linked expansion with spreading Christianity and their own society. Some claimed they would ‘civilise’ Indigenous peoples: this expressed the settlers’ assumptions of superiority, not an objective description of Indigenous societies.

This belief encouraged migration by presenting settlement as more than a personal search for profit. Moving west could seem like fulfilling a religious and national mission. It also helped justify government encouragement of expansion and gave some migrants a reason to persist despite the dangers. However, migrants had different motives; not everyone travelled primarily because of Manifest Destiny.

The Donner Party: how delays became disastrous

The Donner Party set out for California in 1846. Their experience shows how decisions about routes and timing could turn a difficult journey into a disaster.

The party took an unproven shortcut away from the established route. Instead of saving time, it delayed them. They reached the Sierra Nevada mountains too late in the year and became trapped by snow during the winter of 1846–47.

Unable to continue and running short of food, the migrants faced starvation. Many died, and some survivors resorted to eating the bodies of those who had died. The important causal chain is the shortcut, followed by delay, entrapment in winter snow and then starvation. Their experience demonstrates why reliable routes, adequate supplies and seasonal timing mattered so much.

The Mormon migration, 1846–47

The Mormons migrated for a different reason: they wanted to escape religious persecution and establish a community where they could practise their faith. Joseph Smith, who founded their movement in 1830, was murdered by a mob in 1844. His successor, Brigham Young, led the search for a safer home.

Hostility in Illinois forced the Mormons to leave Nauvoo in February 1846, earlier than Young had intended. Cold weather made the first stage slow and difficult. They reached the Omaha area in June, but Young decided against attempting the remaining journey so late in the season. They stayed there until spring 1847.

In April 1847, an advance party of about 150 set out towards the Great Salt Lake. It carried substantial supplies and equipment for river crossings. The pioneers identified a route and water supplies, prepared crossings and planted crops to help those who followed. They reached the Salt Lake Valley in July 1847, with larger groups following later that year.

Young’s leadership gave the migration clear organisation. Groups had leaders and people with different skills, while discipline and shared responsibilities helped coordinate work. The contrast with the Donner Party is not that the Mormons faced no danger: their early departure caused real hardship. Rather, they paused when necessary and prepared the next stage instead of allowing delays to carry them into a mountain winter.

Turning Mormon migration into a lasting settlement

Young chose the isolated Salt Lake Valley partly because it lay outside the United States at the time, offering the prospect of distance from persecution. Yet isolation also meant that settlers had to provide much of what they needed themselves.

The environment was challenging. The lake’s salty water could not supply drinking water, and farming required a dependable supply of fresh water. The Mormons built irrigation systems carrying water from streams to their fields. This made crop production possible and required cooperation to build and maintain the channels.

Shared religious commitment supported Young’s authority and helped organise labour. Later Mormon settlements combined skilled workers with Church leadership and supplied resources to the wider community. Their experience shows that successful settlement depended not simply on reaching a destination, but on organising water, food, labour and continuing supplies.

The California Gold Rush of 1849

Gold was discovered at Sutter’s Mill in California in 1848. News spread, and the major Gold Rush of 1849 drew migrants known as ‘49ers’ from the United States and overseas. The prospect of sudden wealth was a powerful pull factor, although most prospectors did not become rich.

Gold encouraged more than mining. Prospectors needed food, tools, transport and other services, so merchants and suppliers also moved west. Mining settlements and towns grew rapidly. California’s non-Indigenous population increased from about 15,000 in 1848 to 300,000 by 1855, and it became a US state in 1850. These population figures exclude the Indigenous peoples already living there.

Some unsuccessful prospectors returned east poorer than before; others stayed and found different work, including farming. Consequently, a temporary search for gold helped create permanent settlement, trade and a more varied economy.

Why early settlement remained difficult

Arrival did not guarantee prosperity. Farming settlements needed suitable land, fresh water and reliable harvests. The Mormons’ irrigation systems show how settlers could respond to environmental difficulties through organised labour rather than simply relying on the promise of fertile land.

Gold settlements developed faster than services and effective government could keep pace. Rapid population growth increased demand for supplies and contributed to law-and-order problems. The hope of wealth therefore produced both economic opportunities and unstable communities.

Settlement also brought damaging consequences for Indigenous peoples. Migrants competed for land and resources and often disregarded existing rights and boundaries. These pressures contributed to conflict. Overall, early settlement grew through farming, religious communities and mining, but its success depended on overcoming practical difficulties—and came at a severe cost to people already living in the West.