Based on the characteristics listed in the chart, the accurate statement is:
The Thirty was an oligarchy, the ecclesia was a democracy, and the Mycenaean Palace was a monarchy.
- The Thirty Tyrants ruling by exile and force suggests an oligarchic system, where a small group holds power.
- The ecclesia, which allowed all members a voice in political, social, and military issues and voted on laws, indicates a democratic system.
- The Mycenaean Palace, with a wanax (a king) and controlled districts, characterizes a monarchy.
Thus, this statement correctly summarizes the forms of government described in the chart.