What effect did the idea of mainfest destiny have in US?

Answer 1

The idea of Manifest Destiny, which emerged in the 19th century, fueled the belief that the United States was destined to expand across the North American continent. This ideology justified westward expansion, leading to significant territorial acquisitions, such as the Louisiana Purchase and the annexation of Texas. However, it also contributed to the displacement and suffering of Native American populations and intensified conflicts over slavery, ultimately playing a role in the lead-up to the Civil War. In essence, Manifest Destiny shaped both the geographical and moral landscape of the nation.