Why Did It Take so Long for the Nations of Europe to Defeat Napoleon I?

Napoleon had been working hard in building a powerful and great empire ever since the beginning of his rule as Emperor in 1804. Since before that time he had managed to expand French territory into Italy, he had annexed the Austrian Netherlands, The German States, the Batavian Republic, later on he annexed parts of Egypt, and Parts of Spain. It was because of this hugely successful foreign policy and France's revolutionary background that the Nations of Europe, particularly Britain, Austria and Russia, felt threatened. France was considered such a huge threat because of the revolution it had carried out and the changes it was imposing on the countries that Napoleon successfully annexed, it was a threat to the monarchy as a system, and because of that France was the number one enemy in Europe at the time.…