Why did Eliza chose to move to Philadelphia after her husband bought her freedom in the book fever 1793?

In "Fever 1793," Eliza chose to move to Philadelphia after her husband bought her freedom because she sought a new start in a city where she could live freely and independently. Philadelphia was known for its vibrant free black community and opportunities, which appealed to her desire for a better life. Additionally, the upheaval and challenges posed by the yellow fever epidemic in her home city of Philadelphia made her decision to leave even more compelling, as she wanted to escape the chaos and danger that surrounded her.