- Naval Power: Great Britain was the dominant naval power in the world, and its Royal Navy was superior to the French Navy. This made it difficult for Napoleon to invade Britain or to transport troops and supplies across the English Channel.
- Economic Sanctions: Great Britain used its naval power to enforce economic sanctions against France. These sanctions prevented France from importing vital goods and resources, and they weakened the French economy.
- Financial Support: Great Britain provided financial support to France's enemies, such as the Austrian Empire and Russia. This support helped to keep France engaged in a costly and protracted war.
- Political Opposition: Great Britain was a vocal critic of Napoleon's policies, and it encouraged other European powers to resist French domination. This helped to create a coalition of European powers that eventually defeated Napoleon.
Overall, Great Britain's naval power, economic sanctions, financial support, and political opposition all contributed to make Napoleon's conquests in Europe difficult and unsustainable.