The first amendment gives people the freedom of speech, press, religion, and right to petition.
The second amendment gives people the right to own guns.
Theses are just the first two amendments, let me know if you need help with ten all of them :)
According to the declaration of independence governments receive their authority and power from the "citizens" or general populus, since American was founded on the principle of popular sovereignty, in which government is ultimately answerable to the people who elect its representatives.