In tribe communities the most capable people were elected leaders. Through the soviet system this is possible also in the contemporary world. Formations of human communites follow each other in a certain indeterministic way. The principal schema below is describing and principal. In practice matters are more complicated.
Many exceptions are possible.
Democracy will grow to wider basis when the consciousness of a human being enlarges. Democracy must enlarge also because the democratic control of the technically developed world is necessary. Possibilities of dermocratic progress depend crucially on the organizational model. Principal guidelines of developement of formations of human communities as geometrical figures. Tribes elect their leaders people with most competence for leadership.