Complex sentence: It dramatizes the negotiations between the emissaries of the Athenian invaders and the rulers of Melos, in which the Athenians demanded that Melos submit and pay tribute or be destroyed.
Split into simpler sentences: It dramatizes the negotiations between the emissaries of the Athenian invaders and the rulers of Melos. The Athenians demanded that Melos submit and pay tribute or be destroyed.