The names of the two women mentioned in the question are Zitkala Sa and Bama Tamilian Dalit.

Zitkala Sa, also known as Gertrude Simmons Bonnin, was a Native American woman who lived from 1876 to 1938. She was born on the Yankton Indian Reservation in South Dakota and was a member of the Yankton Dakota Sioux tribe. Zitkala Sa was a writer, musician, and activist who fought for Native American rights and cultural preservation. She is best known for her writings, which explore the experiences of Native Americans during a time of great change and assimilation efforts.

Bama, whose full name is Bama Faustina Soosairaj, is an Indian author who hails from the Dalit community. She was born in 1958 in a small village called Punnaiyadi in Tamil Nadu, India. Bama's writings focus on the experiences of Dalit women and the caste-based discrimination prevalent in Indian society. She is known for her autobiographical novel "Karukku," which was the first Dalit feminist work to be published in Tamil literature.

Both Zitkala Sa and Bama share a commonality in their writings, as they both explore the struggles and challenges faced by marginalized communities. Zitkala Sa's works shed light on the historical injustices faced by Native Americans, while Bama's writings expose the discrimination and oppression faced by Dalits in contemporary Indian society. Both women use their literary talents to give voice to the unheard stories and experiences of their respective communities.

These two women have made significant contributions to literature and activism, using their writings to raise awareness and advocate for the rights and dignity of their communities. Their works continue to inspire and empower others, highlighting the importance of representation and speaking out against injustice.

In conclusion, Zitkala Sa and Bama are two remarkable women who have left a lasting impact through their writings and activism. Their names are noteworthy in the realms of Native American and Dalit literature, respectively, and their works continue to resonate with readers around the world.