Answer :
Explanation:
Purpose: The battle of Austerlitz (2 December 1805) or the Battle of the three emperors was one of Napoleon's most impressive victories and saw him inflict a crushing defeat on an Austro- Russian Army, in the process knocking out of the war of the third coalition.
Reason why: Napoleon was able to inflict a defeat on the coalition.He won because he duped Allies into thinking that he wanted negotiations which promoted them to seek a battle which he had expected and wanted.