Hitro
Feistus Raclettus
Out of those given the reformation, because all the others are single events that may have speeded up a development in some cases, but non of those developments would have been completely prevented otherwise (America would have been discovered eventually not too late after Columbus, Japan would have lost the war without the bombs and the bombs would have been developed eventually, same with the Sputnik, etc.).
The fall of Rome in itself was inevitable, the reformation as we know it wasn't.
The fall of Rome in itself was inevitable, the reformation as we know it wasn't.