A climatic catastrophe rocked the Earth in A.D.535 causing two years of darkness , famine, drought and disease

Was it a comet? An asteroid? A volcano?

Written records from China, Italy, Palestine and many other countries suggest a huge catastrophe blighted the world in 536 AD. But the cause of it has been uncertain. Archaeologist David Keys reveals that a volcano is to blame for the Dark Ages of famine and plague that shaped the world order of today.
The Real History