Explanation:
Lisa Gherardini, the real-life model who posed for Leonardo da Vinci's iconic painting, was pushed into a wedding with wealthy Florentine merchant Francesco del Giocondo.
  
        
             
        
        
        
c the deficit is related to the e.t.c
 
        
             
        
        
        
Answer:
Read below
Explanation:
1: Barbarians kept on attacking
2: Internal stability like the killing of Julis Ceaser
3: Ethnic groups inside the Roman Empire that wanted to be free
4: People were hungry for power
5: Failing economic system
6: The Roman Empire being split in two
7: Some people didn't want to change there religion
8: Rise Of Islam ( later years )
9: Different cultures
 
        
             
        
        
        
West or east of prime meridan
        
             
        
        
        
What is urgent there's nothing to answer?