If you're referring to Napoleon's Spanish Iberian peninsula campaign between France and the coalition of Spain, Portugal and England from 1808-1814 there were three critical reasons for its failure and one main critical importance for its failure.
The three critical reasons for its failure:
1) Napoleon greatly underestimated the fierceness and will of the Spanish fighting spirit.
2) Chiefly because of reason 1) above, the vastness of the Spanish frontier and the resources required to occupy & hold territory bled his army dry.
3) Napoleon did not expect the coalition arrayed against him to hold as strongly as it did.
The main importance of its failure was that, due to Napoleon's overly ambitious tenancy to overstretch and string-out his resources, his other armies in other theaters of war were left under strengthened.
Answer:
The birth of the saviour (JESUS).
Explanation:His birth brought liberation to the whole Christian generation.
Through his birth,we have been informed of him coming to be our Redeemer from all bondages been it physical or spiritual.
In addition,
According to John 3:16,
For God so Loved the world that he gave his only begotten Son, that who so ever believe in him will not perish but everlasting life.
By this, we've all been SAVED!
Where is the graph can’t answer if it’s not there
Answer:
I think the answer is a they made the war shorter then earlier wars