Please correct consistency errors in the given text.
By the end of the 9th century, economic and social conditions, that dictated the increased need of metal for agriculture, arms, stirrups and decoration, started to favor metallurgy and a slow but steady general progress was noted. Starting from the reign of the emperor Otto I in the 960s, smelting sites were multiplied.
By the end of the 9th century, economic and social conditions, that dictated the increased need of metal for agriculture, arms, stirrups and decoration, started to favor metallurgy and a slow but steady general progress developed. Starting from the reign of the emperor Otto I in the 960s, smelting sites were multiplied.