In the definition of the American Dream by James Truslow Adams in 1931.
The idea of the American Dream is rooted in the United States Declaration of Independence which proclaims that "all men are created equal" and that they are "endowed by their Creator with certain inalienable Rights" including "Life, Liberty and the pursuit of Happiness."
The meaning of the "American Dream" has changed over the course of history, and includes both personal components (such as home ownership and upward mobility) and a global vision. Historically the Dream originated in the mystique regarding frontier life.
As the Royal Governor of Virginia noted in 1774, the Americans "for ever imagine the Lands further off are still better than those upon which they are already settled". He added that, "if they attained Paradise, they would move on if they heard of a better place farther west."
The ethos today implies an opportunity for Americans to achieve prosperity through hard work. According to The Dream, this includes the opportunity for one's children to grow up and receive a good education and career without artificial barriers.
It is the opportunity to make individual choices without the prior restrictions that limited people according to their class, caste, religion, race, or ethnicity. Immigrants to the United States sponsored ethnic newspapers in their own language; the editors typically promoted the American Dream.