🛠️ Invention or technique

Heavy mouldboard plough

Arado pesado de vertedera

Date
c. 650 · confidence low
Place
North European plain (Frisia / Rhine valley)
Credited to
Slavic and Germanic peasants
Field
Life & health

⚠️ Disputed: the sources disagree.

What it is

A plough with a share, coulter and mouldboard mounted on wheels that cuts and turns the heavy clay soils of northern Europe. It made previously unworkable land cultivable, unlike the light Roman ard.

Origin and date are much disputed: there are earlier Slavic, Germanic and even Chinese indications; mass diffusion is Carolingian.

What it led to

  • agrarian colonisation of northern Europe and demographic growth in the 10th-13th centuries
  • open fields in long strips and village cooperation to share ox teams
  • a shift of Europe's economic centre from the Mediterranean to the north
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Sources✓ verified 2026-09-23