What important conclusion did Isabel reach at the Battle of Yorktown?

As the American and French troops fought in the battle of Yorktown, Isabel realized that the war she had disdained was a worthy cause. She realized that Curzon had not picked the war over her when he had enlisted, but was a man capable of loving and planning not only on the small scale but also on the large scale. After the British surrendered in the battle of Yorktown, the black people who had supported the British with the promise of being granted their freedom were sent back to their masters. Blacks whose masters could not be found were claimed as the property of Virginia.