How did the coalition warfare against Napoleon affect the continental system?

The coalition warfare against Napoleon directly undermined the Continental System by fostering widespread resistance among European nations. As coalitions formed to counter Napoleon's expansion, many countries began to defy the trade restrictions imposed by the Continental System, seeking to restore economic ties with Britain and other nations. This resistance weakened the effectiveness of the system, leading to increased smuggling and ultimately contributing to Napoleon's downfall. The constant military conflicts also drained resources and created political instability, further eroding the system's intended economic isolation of Britain.