According to the declaration of independence, who did the goverment derive its power from

Should be Great Britain which was a monarchy and is the reason the Declaration of Independence was wrote

The people.

They people bestowed their agreement/approval, unlike most of the countries at the time where your obedience was expected. Self autonomy is recognized in the U.S. constitution.

In China and Russia, utilitarianism allows you to contribute your opinion, but your opinion/beliefs should not interfere dramatically from the group whole.

Does that help?