Manifest Destiny was a belief that emerged during the 19th century, asserting that it was the divine destiny of the United States to expand its territory from coast to coast. This concept gained significant traction and became a driving force behind Westward Expansion. Supporters of Manifest Destiny saw it as the nation's duty to spread its democratic ideals, values, and culture across the continent.

One example illustrating the idea of Manifest Destiny is the Louisiana Purchase of 1803. President Thomas Jefferson acquired a vast territory from France, doubling the size of the United States. This acquisition not only provided essential resources but also opened up new opportunities for westward expansion. The belief in Manifest Destiny justified the acquisition and subsequent settlement of this territory, as it was seen as an inherent right of the American people to explore and establish communities in these newly acquired lands.

Another prominent example of Manifest Destiny was the Oregon Trail. In the 1840s, thousands of settlers embarked on a treacherous journey westward, seeking fertile land and economic opportunities in Oregon. The belief in Manifest Destiny propelled these pioneers forward, even in the face of hardships such as harsh weather conditions, disease, and attacks by Native American tribes.

The concept of Manifest Destiny played a significant role in the westward movement of the United States, shaping both the national identity and the course of American history.