Electing representatives in free and fair elections

I believe the answer is: confers legitimacy on a government

Representatives that are chosen from a free and fair election could be to be appointed with the blessing of the majority citizens.
This confers legitimacy on a government which was built to make the will of the people into realization and would work for the collective benefits of the community.

physical systems

Explanation: The physical systems are one of the six essential elements of geography. These systems are the ones that are natural, and they shape the physical appearance of Earth because of its geological process. Part of these physical systems are the volcanoes with their eruptions. The Volcanoes are one of the major factors that influence the shaping of the Earth's surface, as they manage to propel enormous amounts of material from them, with the magma/lava being the one that usually covers the surface and creates new land forms. The volcanoes themselves create new forms, be it island chains or continental arcs.