@TheAngelKing47 Emperor Basil II needed mercenaries, and Vladimir the Great wanted another wife. So Basil traded his sister, and the conversion of Kiev. For 6000 Varangian mercenaries (the beginning of the Varangian Guard).
@Absolutionis@PandasAndVidya Saga games are just the old expansion campaigns (Viking Invasion, Age of Charlemagne, etc) that are sold as full price games.