The declaration opens with a preamble describing the document's necessity in explaining why the colonies have overthrown their ruler and chosen to take their place as a separate nation in the world. 

 All men are created equal and there are certain unalienable rights that governments should never violate. These rights include the right to life, liberty and the pursuit of happiness. When a government fails to protect those rights, it is not only the right, but also the duty of the people to overthrow that government. In its place, the people should establish a government that is designed to protect those rights. Governments are rarely overthrown, and should not be overthrown for trivial reasons. In this case, a long history of abuses has led the colonists to overthrow a tyrannical government. 

 The King of Great Britain, George III, is guilty of 27 specific abuses. The King interfered with the colonists' right to self-government and for a fair judicial system. Acting with Parliament, the King also instituted legislation that affected the colonies without their consent. This legislation levied taxes on the colonists. It also required them to quarter British soldiers, removed their right to trial by jury, and prevented them from trading freely. Additionally, the King and Parliament are guilty of outright destruction of American life and property by their refusal to protect the colonies' borders, their confiscation of American ships at sea, and their intent to hire foreign mercenaries to fight against the colonists. 

 The colonial governments tried to reach a peaceful reconciliation of these differences with Great Britain, but were continually ignored. Colonists who appealed to British citizens were similarly ignored, despite their shared common heritage and their just cause. After many peaceful attempts, the colonists have no choice but to declare independence from Great Britain. 

 The new nation will be called the United States of America and will have no further connections with Great Britain. The new government will reserve the right to levy war, make peace, make alliances with foreign nations, conduct trade, and do anything else that nations do

Declaration of Independence Fact 1: The Declaration of Independence was signed on July 4, 1776, by the congressional representatives of the 13 Colonies of Colonial America. 

Declaration of Independence Fact 2: The document was signed by 56 delegates to the Continental Congress 

Declaration of Independence Fact 3: The document stated the reasons the 13 American colonies wanted to be free of Great Britain's government. 

Declaration of Independence Fact 4: The Declaration of Independence states that the authority to govern belongs to the people, rather than to kings, that all people are created equal and have rights to life, liberty and the pursuit of happiness. 

Declaration of Independence Fact 5: The American colonies had been at war with Great Britain for over a year when the document was signed.

Obama speech is very concerned about his audience, also known as his future electors. He makes sure to engage and entertain when he addresses the audiences. Obama is well-known for his great speeches, and he knows the important to capture the audience and the way he dos that is by engaging the reader and because of his content and ambitions.

rhetorical use:
 Primarily he makes use of sponsorship effects (meaning that you support something) and anaphora’s (is a rhetorical tool that consists of repeating words at the beginnings or the ends) and Antithesis ( is used either as a proposition that contrast or reverses some previously mentioned proposition) and Polyptotons (when words is use from the same root are repeated – such as “strong” and “strength”)

John F. Kennedy's speech titled Civil Rights Address, is delivered 11. June 1963.

His speech is about the equal rights for all people, blacks and whites. The speech is written in the period of the two first black students were about to attend the University of Alabama.

Kennedy is reaching out to all Americans with the message; 

"The heart of the question is whether all Americans are to be afforded equal rights and equal opportunities, whether we are going to treat our fellow Americans as we want to be treated."

The Americans are preaching for freedom except for the Negros, that also a point he tries to get out. He wants you abolish the class difference between black and whites. 

People should be ashamed the once who doesn't take part in the revolution. 

He also speaks to the Congress, about all the things the black should have the rights to do as the white. To go to school, to restaurants, cinemas or stores as all other people no matter color.

There is some repeated words as: asking the Congress, it cannot be, i ought to.

To get all the important info you need to read the speech.