Headquartered in Salt Lake City, The Church of Jesus Christ of Latter-day Saints has a presence in numerous countries.

The Jehovah’s Witnesses is headquartered in New York and has offices throughout Africa.

The Presbyterian Church (USA) is the largest Presbyterian body in the United States.

Stephanie Nyombayire is a representative for the Genocide Intervention Network and a Rwandan native. She worked at Swarthmore College in Pennsylvania to end the crisis in Darfur. Dozens of her family members died in the Rwandan genocide of 1994. Contact through United to End Genocide.

Ronan Farrow is a human rights activist, journalist, lawyer and government official. He was a UNICEF Spokesperson for Youth who worked to end the killing in Darfur.

Richard Lobban is professor and chair of anthropology at Rhode Island College. As a journalist he covered wars in Sudan. He is executive director and first president of the Sudan Studies Association.

Eric Reeves, an English professor at Smith College in Northampton, Mass., has a website recording his years of advocacy and analysis of the events in Sudan. He is a frequent op-ed writer and commentator on the subject.

Islamic Relief Worldwide, based in Birmingham, U.K., provided aid to Darfur. Its U.S. branch is based in Buena Vista, California.

The Africa Faith and Justice Network advocates for responsible U.S. relations with Africa from a Catholic perspective.