Otto I (23 November 912 - 7 May 973), traditionally known as Otto I the Great (Otto I. der Große), was German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973. After putting down a brief civil war among the rebellious duchies, Otto defeated the Magyars at the Battle of Lechfeld in 955, thus ending the Hungarian invasions of Western Europe.
Otto I, Holy Roman Emperor ended the Bulgarian invasions.
Otto I, Holy Roman Emperor ended the Bulgarian invasions.

 Rate the veracity of the claim based on the evidence in the next paragraph.

Otto I (23 November 912 - 7 May 973), traditionally known as Otto I the Great (Otto I. der Große), was German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973. After putting down a brief civil war among the rebellious duchies, Otto defeated the Magyars at the Battle of Lechfeld in 955, thus ending the Hungarian invasions of Western Europe.

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Otto I, Holy Roman Emperor ended the Bulgarian invasions.

 Rate the veracity of the claim based on the evidence in the next paragraph.

Otto I (23 November 912 - 7 May 973), traditionally known as Otto I the Great (Otto I. der Große), was German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973. After putting down a brief civil war among the rebellious duchies, Otto defeated the Magyars at the Battle of Lechfeld in 955, thus ending the Hungarian invasions of Western Europe.

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 - supported

 - refuted

 - not enough information
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