It is protected by the fact that it has a system of separation of powers with three branches that control each other and prevent tyrannical behavior from a single branch. They are also separated into local provinces and autonomous regions that are ruled by small scale governments that have some degree of independence and that could easily oppose a new form of tyrannical government.
The Spartan government was by a small group of people-the vast majority of citizens could only vote yes or no the questions put to it. Most of the decisions were made by a small group of ephors (high ranking magistrates) constrained by the constitution of Lycurgus and the two kings.
D. Core Jewish principles such as monotheism, the covenant, and the teachings of Abraham, Moses, and other prophets influenced Jesus's messages