How did Charles-Maurice de Talleyrand help France join the main decision-making group at the Congress of Vienna?

When Charles-Maurice de Talleyrand arrived at the Congress of Vienna in September 1814, he found that the four major powers—Austria, Great Britain, Prussia, and Russia—intended to exclude France from the primary decision-making process.1

Talleyrand successfully challenged this arrangement by refusing to recognize the authority of the "four" to act as a legally constituted body. He argued that the only legitimate group was the "eight," which consisted of the powers that had signed the Treaty of Paris in 1814. By championing the rights of smaller powers and threatening to appeal to them, Talleyrand created significant pressure on the core group.1

Ultimately, Talleyrand’s diplomatic skill allowed him to exploit divisions among the four powers. As he gained the confidence of the British and Austrian representatives, they eventually insisted on admitting Bourbon France into the core group. This transformed the committee of four into a committee of five, which became the true decision-making body of the Congress.21