Here are some one liners...
The Luther Bible New Testament -- The New Testament translation from Martin Luther in the new High German. He is right to do so even if the Catholic Church was doing everything else correctly. I talk about the need for regular translations or learning how to translate yourself.
The Headhunting Hospitallers and Tax Incentives -- The Knights of St. John have hired away an engineer to help them fortify Rhodes. In the end they lose to the Turks and the Turks allow them to leave but offer tax incentives for the natives to remain.
The Poor Barons' Revolt and the Problem with Change -- Society is changing its behavior and this has caused a problem for the barons who have no way to tax people who aren't doing what they used to do.