Question: When did the byzantine empire start to decline?
Disambiguated questions and answers: question: When did the byzantine empire start to decline slightly after major losses during Arab conquests?
When did the byzantine empire start to decline for a final time?
answer: 7th century
1071
11th century
question: When did the byzantine empire first start to decline?
When did the byzantine empire final start to decline?
answer: 7th century
11th century
Natural Questions answer: 1071 (from the Wikipedia article "Decline of the Byzantine Empire")