Manifest Destiny was the belief prevalent in the 19th century United States that American settlers were destined to expand across North America, from the Atlantic seaboard to the Pacific Ocean. The acquisition of Oregon and the Mexican Cession were two key events that contributed to the realization of Manifest Destiny.
The acquisition of Oregon Territory in 1846, which was largely unpopulated and rich in natural resources, helped to expand the United States' territorial footprint and provided new opportunities for westward expansion. This acquisition, which was achieved through a treaty with Great Britain, brought the Pacific Northwest under American control and allowed for the development of trade routes and settlements in the region. It also provided additional land for American farmers and ranchers to settle, contributing to the westward expansion of the country.
The Mexican Cession, which was acquired through the Treaty of Guadalupe Hidalgo in 1848, added significant territory to the United States, including California, Nevada, Utah, Arizona, New Mexico, and parts of Colorado, Wyoming, Kansas, and Oklahoma. This acquisition was significant because it provided the United States with access to the Pacific Ocean, which was crucial for trade and commerce. It also allowed for the expansion of the country's agricultural and mining industries, as well as the development of new settlements and transportation infrastructure, such as railroads.
Overall, the acquisitions of Oregon and the Mexican Cession contributed to the realization of Manifest Destiny by providing new opportunities for westward expansion, facilitating the growth of American industry and commerce, and increasing the territorial footprint of the United States.