Analysis:
- The text describes the formation of feudal relations in Japan.
- It states that Japan, in the High Middle Ages, was unique as the only non-European country where feudal relations developed.
- This period saw the emergence of relationships between lords (seigneurs) and vassals, where landowners offered protection in exchange for service.
Answer:
The High Middle Ages is mentioned as the period when feudal relations formed in Japan. Uniquely, Japan was the only non-European country where this system developed.