Delta Sigma Theta Sorority, Inc. is a prominent African American Greek-letter organization that was founded on January 13, 1913 at Howard University in Washington, D.C. by 22 collegiate women. The sorority was established with a focus on sisterhood, scholarship, and service, and has since evolved into a leading organization that advocates for social justice, political awareness, and community service.

Throughout its history, Delta Sigma Theta has been at the forefront of various social and political movements, including the civil rights movement. The sorority's members have been actively involved in advocating for racial equality, voting rights, and other social justice issues.

Delta Sigma Theta has also established several programs and initiatives to support the African American community, including educational scholarships, mentoring programs, and health initiatives. The sorority's commitment to uplifting and empowering Black communities has made it a key player in Black history.

Overall, Delta Sigma Theta Sorority, Inc. has played a significant role in Black history by promoting leadership, advocacy, and service among African American women and by championing important social justice causes.