The Bill of Rights was important in the founding of the United States because of the depravity experienced by many of the immigrants.  While the U.S. Constitution was written in 1787, it wasn't until two years later that the ten Bill of Rights were incorporated into the governing document. 

The ten Bill of Rights are summarized as:

1) Freedom of Religion

2) The right to bear arms.

3) Consent to house soldiers

4)  No unreasonable searches or seizures

5) No self incrimination, due process

6) Jury trial for all, public defense

7) In common law, right of jury trial

8) No excessive bail or cruel and unusual punishment

9) Constitution cannot deny rights of others

10) Governmental power default to the states