Historically significant events in Europe between 1404 and 1438

[Koen G]

(Now is the moment when I am told how many people think it may not be European in origin.)

Actually I think the idea that the VM was made in Europe may be the least controversial one of all. Does anyone currently on the forum believe that it was most likely made outside of Europe? 

This is a good idea for a thread. The first event I can think of is the You are not allowed to view links. Register or Login to view., which tells us about the situation of the Church in those days:

The Council of Constance was a 15th-century ecumenical council recognized by the Catholic Church, held from 1414 to 1418 in the Bishopric of Constance in present-day Germany. The council ended the Western Schism by deposing or accepting the resignation of the remaining papal claimants and by electing Pope Martin V.