 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.
<coherence>  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. Consequently, conditions began 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.