Manifest Destiny and Oregon Trail Migration

During the mid-19th century, the concept of Manifest Destiny emerged as a driving force behind American expansionism. This belief held that the United States was destined to expand across the North American continent, spreading democracy and civilization. Proponents of Manifest Destiny argued that this expansion was not only justified but also inevitable, and they often pointed to the moral imperative of expanding American ideals to other territories. Such sentiments played a significant role in various key events, including the annexation of Texas and conflicts with indigenous peoples and neighboring nations.

Which of the following events is most directly associated with the ideology of Manifest Destiny?