Who was an early advocate of women's rights and one of the great letter writers in history?

One early advocate of women's rights and a renowned letter writer was Abigail Adams. She is best known for her correspondence with her husband, John Adams, where she famously urged him to "remember the ladies" when forming the new government of the United States. Her letters not only provided insight into her thoughts on gender equality but also showcased her intelligence and wit, making her a significant figure in early American history.