What was the contributing factor to napoleon’s defeat at the battle of trafalgar? -spain allied with britain, and together they defeated france’s weak navy.-napoleon enlisted spain’s in forming a strong navy, but he was defeated anyway.-the allied forces, made up of all countries in europe except france, defeated the french.-spain refused napoleon’s request for and turned against france.

The correct answer is the third one: Napoleon enlisted Spain’s help in forming a strong navy, but he was defeated anyway.

Imperial France, under Napoleon's rule, had an alliance with Spain since both countries signed the treaties of San Ildefonso (1799) and Aranjuez (1800). Also, both countries shared a common enemy, the United Kingdom, since the British Navy represented a threat to the Spanish dominion of the seas and Spain wanted to recover Gibraltar from British hands. The UK and Napoleon's France were natural enemies, due to the fact that both countries wanted to expand their national bourgeoisie through a global empire. Napoleon took advantage of his alliance with Spain in order to face the British Navy in Trafalgar, but the French-Spanish float was defeated by the British, frustrating Napoleon's intention of invading the UK by sea, and giving an end to the Spanish naval power.

i think it was   tsar alexander ii