Final answer:
The California Gold Rush spurred westward migration along the Oregon and California Trails, leading to the development of stagecoach services and, ultimately, the transcontinental railroad that revolutionized travel to the western United States.
Step-by-step explanation:
The California Gold Rush significantly influenced American migration patterns in the 19th century. News of gold discovery in California in 1848 triggered a mass migration westward, with people traveling by the Oregon and California Trails. This westward expansion was not without its perils, as travelers faced illnesses, starvation, and treacherous terrain, requiring between five to six months to complete the journey.
Despite the dangers, the promise of gold and opportunity led to the development of stagecoach services, such as those planned by Wells and Fargo, to assist travelers going to the gold fields. With the completion of the transcontinental railroad in 1869, travel to the West was transformed, reducing the journey time from months to a week.