We often think of countries like the United States, France, England and Sweden (and many others) as being democratic. These countries differ in how many political parties get seats in the legislature and along some other dimension.
There have been several societies with no central leadership, not even an ideological leader:
- The portion of Hebrew history known as "Judges"
- The tribes living on the east side of the Rhine River, known to Romans as "Germanicus"
- The Dutch Empire
- The American colonies
Each was peaceful,stable, prosperous and unconquerable in war. Each lasted about 150 years and then the people threw away their accomplishments and demanded a central government. After that they either got conquered or collapsed internally.
All systems of central government eventually lead to collapse or defeat in war. You would think people would eventually grow a brain and stop creating central governments, but they don't.