By 1805 how successful had Napoleon been in efforts to build an empire?

By 1805, Napoleon had achieved significant success in building his empire, consolidating control over much of Europe through a series of military victories and strategic alliances. He established the French Empire and expanded its territory, dominating the continent and defeating major powers like Austria and Prussia. His reforms, including the Napoleonic Code, helped to integrate conquered lands and spread revolutionary ideals. However, his ambitions also set the stage for future conflicts and resistance from other nations.