What helped Napoleon successfully capture many countries?

Cunning and skillful politics helped him in this. So, on the one hand, he defeated the enemy on the battlefield, and on the other, he sought political superiority over him. So, for example, in 1807 an alliance was concluded between Russia and France. This agreement is often called the diplomatic defeat of the Russian tsar – Alexander 1, due to the fact that he went to unprofitable diplomatic agreements. For example, it was the severing of diplomatic ties with England and the announcement of a continental blockade to her.