Battle of Lechfeld
The Hungarians, or Magyars, conquered the Carpathian Basin at the turn of the 9th and 10th centuries. Here they found a predominantly Slavic-speaking population. From their new homeland, they launched plundering raids against East Francia, Italy and other regions of Europe. Their raids were halted by Otto I, future Holy Roman Emperor, who defeated them at the Battle of Lechfeld in 955.