Why was Helen Hunt Jackson famous for?

Helen Hunt Jackson was famous for her advocacy for Native American rights and her literary contributions. Her most notable work, "A Century of Dishonor," published in 1881, highlighted the injustices faced by Native Americans and aimed to raise public awareness and support for their plight. Additionally, her novel "Ramona" romanticized the plight of Native Americans in California and helped garner sympathy for their cause. Through her writing and activism, Jackson played a significant role in the early American Indian rights movement.