The Vatican jailed Galileo in his own home for life using the scientific method....300 years after your alleged Vatican science began....Wotjla alias jp2 finally pardoned Galileo 500 yrs too late while 50 years of rhythm method has murdered 6 million women yearly denied life saving abortions or deadly disease preventing condoms

Of course priests were ordered celibate to preserve Vatican wealth from orphans wanting a priest inheritance

One theory is, the middle ages mini-ice age was the result of a slowing in the Atlantic's gulf-stream's direction and flow.

And, famine always results in way bad memories.

pretty sure that global cooling resulting in poor or no crops resulted in the plagues.

The first wave of plague was the result of a "comet" impact in 538. About every 50 years thereafter a version of the plague killed the old and young. Hence the "dark-ages."

Islam was one of the results of this worldwide devastation.

You are talking about the 14th century but let me tell you something of the 21st century. It is happening as we speak. Early Christianity alone does not have the sole right to ignorance and damage to humanity.

Their faith wasn't strong enough. If they had just believed harder they'd have defeated the Plague through the power of prayer.

Cuz that's a thing.

The best bit was that the Feudal lords workforce was decimated and they had to deal people with a bargaining chip if they wanted to stay in business. The people also took up against the clergy as they were clearly not doing their job by not keeping God onside!