The "Westward Journey" refers to the migration of settlers and pioneers across the United States during the 19th century, particularly from the 1840s to the 1860s. This movement was driven by the belief in Manifest Destiny, the idea that Americans were destined to expand across the continent. Key routes included the Oregon Trail and the California Trail, which facilitated travel to new territories. This period saw significant events such as the Gold Rush of 1849, which attracted thousands seeking fortune in California. The journey was often perilous, involving challenges like harsh weather, difficult terrain, and limited resources, but it ultimately contributed to the growth and development of the American West.