What happened to the iconic American and the ideal of democracy due to westward expansion?

In 1803, President Thomas Jefferson acquired the region of Louisiana from the French government for $15 million. The Louisiana Purchase extended from the Mississippi River to the Rocky Mountains and from Canada to New Orleans, and it multiplied the extent of the United States. To Jefferson, westbound extension was the way to the country's wellbeing: He trusted that a republic relied upon a free, ethical citizenry for its survival, and that autonomy and uprightness ran as an inseparable unit with arrive proprietorship, particularly the responsibility for ranches. ("The individuals who work in the earth," he expressed, "are the picked individuals of God.") keeping in mind the end goal to give enough land to manage this perfect populace of prudent yeomen, the United States would need to keep on expand. the westbound development of the United States is one of the characterizing subjects of nineteenth century American history, however it is not quite recently the tale of Jefferson's growing "domain of freedom." in actuality, as one antiquarian composes, in the six decades after the Louisiana Purchase, westbound extension "practically destroy[ed] the republic."

The westward expansion came together with the development of technologies that created modern work environment that we see today. This require a lot of people to be self-capable to survive in such working environment.

This situation really reflect the iconic American ideal of self-reliant individuals that we see in our society today.