Final answer:
Spain was not able to fight off Napoleon's army.
Step-by-step explanation:
Napoleon's army invaded and conquered numerous countries during the Napoleonic Wars that took place from 1803 to 1815. One of the countries that was unable to resist Napoleon's army was Spain. In 1808, Napoleon invaded Spain, effectively ending Spanish resistance and installing his brother Joseph as the new ruler. Despite some local resistance, the Spanish were unable to oust the French forces until the final defeat of Napoleon's army in 1814.
Learn more about Napoleon's invasion