What were the causes of the population decline in the early 14th century?

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939