Final answer:
The key difference between Minoan Palaces and Mycenaean citadels is that only the Mycenaeans built tholos tombs, while the Minoans are known for their elaborate frescoes in sprawling palace complexes.
Step-by-step explanation:
The major difference between Minoan "Palaces" and Mycenaean citadels is the presence of tholos tombs. The Mycenaeans, known for their war-like culture, constructed these bee-hive shaped tombs as part of their funerary architecture, an example being the Treasury of Atreus. In contrast, the Minoans built complex and sprawling palace centers, like the Palace of Knossos, which were political, religious, and economic hubs decorated with extensive frescoes. Their palaces did not include tholos tombs, which is distinctive to the Mycenaean civilization.