OK, within that context, the end of the mercantile system, the protestant reformation, the weakening of colonial imperialism, and various other factors combined to create a moment when the collective use of force against the British crown gave us the ability to declare those rights enumerated in the Constitution...no magic, or divinity involved.
(What was involved was the passage of time, and the occurence of human interaction, for which 'Nature', or 'Providence' et al. seem a standard reference at the time).
So 'rights' are a social artifact, like many others, and as soon as we lack sufficient power over others to retain them, they may go away.