The ideas about manifest destiny profoundly influenced what we know as policy change in the United States during the 19th century. Manifest destiny, the belief that Americans were divinely ordained to expand across the North American continent, shaped the national policies that were not only, ultimately aimed at territorial expansion but justified the displacement of many of the Indigenous peoples. This ideology was not merely an abstract concept but was a structured framework that guided many concrete actions and decisions at federal and local levels across the United States. Manifest destiny influenced many of the several key policy changes that happened, including the most notable Indian Removal Act of 1830. This act facilitated the forced relocation of Native American tribes from their ancestral lands in the Southeastern United States to unwanted lands west of the Mississippi River. The belief in manifest destiny also underpinned the annexation of Texas, the Oregon Trial migrations, and the Mexican-American War, which led to acquisitions of vast territories in the West. These policies were fully driven by the unwavering desire for land, resources, and economic opportunities, which were justified under the complete guise of a divine mandate. The extent to which this manifest destiny was “destined” or rather structured involves a complex interplay of ideology and practical ambition. While proponents of this framed it as an inevitable, almost mystical expansion, in reality, it was a highly structures and strategic endeavor. Government plicies, military action, and many settler initiatives were meticulously planned to achieve these expansionist goals and ideologies. The structured nature of manifest destiny is evident in the organized campaigns to remove said Native Americans from lands, the treaties designed to manipulate land cession, and the many infrastructure developments like railroads that facilitated westward expansion tremendously. Indigenous people responded to US efforts to confine their communities with a wide variety of resistance strategies. Some tribes engaged in armed conflicts to defend their rightful lands, as seen in the Seminole Wars in Florida and the various battles of the Plains Indian Wars. Others, like the Cherokee, pursued legal assistance in this case, most famously through the Worcester v. Georgia case, which challenged the state’s authority over their territory. Despite a favorable Supreme Court ruling, President Andrew’s administration ultimately decided to ignore the decision, leading to what is now known as the Trail of Tears. Additionally, many Indigenous communities sought to adapt and negotiate, attempting to preserve their autonomy and cultural practices within the confines that were imposed on them by the US government. These responses highlighted the resilience and agency of the Indigenous peoples in the face of multiple aggressive expansion policies. While manifest destiny was and is a powerful and often unfortunate oppressive force, it was met with significant and varied resistance from those who were most wrongly affected by its implementation. This resistance underscores the ongoing struggle for Indigenous rights and sovereignty amidst the backdrop of American expansion.