It gets its power to govern from the people that it governs.
They answer is the bill of rights
A I think, I could be wrong though.
An earth equivalent ratio over 1 indicates a global over shoot, a condition that ecological goods and services are consumed at a rate beyond the biosphere's regeneration rate, as a result erode the natural capital, sustainability requires the avoidance of global overshoot, or a Footprint ratio behind 1.