What methods were used by Napoleon to dominate Europe?

Born in 1769, Napoleon Bonaparte became the Emperor of the French in 1804 until 1814 and again in 1815. In his conquests, Napoleon used military power to overcome various countries in Europe and then annex them to France. But he also used another important tactic: he placed members of his family on the various thrones of Europe to cement their link to France. Napoleon himself married an Austrian princess, Marie-Louise, in 1810, for example. One of his brothers became the King of Naples and, later, the King of Spain. Another brother, Louis, became the King of Holland and another, Jerome, became king of Westphalia. Napoleon also placed Bernadotte, one of his marshals, was made the king of Sweden. This tactic was inspired by Alexander the Great, one of Napoleon's historical idols, and was very successful in strengthening Napoleon's grasp over Europe.