How does the bill of rights protect the unalienable rights of "life, liberty, and the pursuit of happiness" listed in the declaration of

i think the answer is a and i hope this ; ))

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!