12 events the sources record for this year, grouped by region.
What happened
Southern Europe (12)
Hearing Callistratus's speech at the Oropus trial, he resolves to become an orator (Plutarch's Parallel Lives Plut. Demosthenes 5)
Thebes summons representatives from each city to hear the king's decree read, but is refused their oaths. (Xenophon, Hellenica 7.1.39)
Epaminondas leads an expedition to Achaea, makes an agreement with the aristocrats, and leaves the cities as they were. Afterward Thebes sends a governor who expels the aristocrats. (Xenophon, Hellenica 7.1.42–7.1.43)
In Sicyon Euphron, with the help of Argive and Arcadian troops, sets up a democracy and becomes a tyrant. (Xenophon, Hellenica 7.1.44–7.1.46)
Argos fortifies Mount Trikaranon above Phlius, and Sicyon fortifies Thiamia, so Phlius falls into distress. (Xenophon, Hellenica 7.2.1)
The Theban governor attacks Phlius with the troops of Euphron, Sicyon, and Pellene, but Phlius's cavalry and elite troops hold them off and win. (Xenophon, Hellenica 7.2.11–7.2.15)
Since Phlius is in dire straits, they call Chares to escort a supply convoy, and together they defeat the enemy. (Xenophon, Hellenica 7.2.18–7.2.20)
Euphron approaches Sparta but gives up; with Athenian mercenaries he retakes Sicyon and wins popular support. (Xenophon, Hellenica 7.3.1–7.3.4)
The exiled aristocrats follow Euphron to Thebes and assassinate him; in the Theban court the murderers are acquitted. (Xenophon, Hellenica 7.3.5–7.3.12)
When exiles seize Oropus, Athens sends troops, but Thebes intervenes and takes Oropus away. (Xenophon, Hellenica 7.4.1)