How does the Declaration of Independence establish and protect the American Dream?

It states that "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."

Explanation:

It says that all men are equal. The American dream is that all people will have equal opportunity's and if this declaration is followed it would do just that.  

the primary theme of "elegy written in a country churchyard" is a reflection about the significance of the lives of a group of modest people buried in a rural church cemetery. elegies focus on the death of an individual or group of people, and they generally have a melancholy tone. hope this you all.

? ? what can you explain this to me i am so confused