

Human: What are the largest charities in the United States?

Assistant: 
One of the largest charities in the United States is the American Red Cross, which is best known for its involvement in disaster relief, including the aftermath of hurricanes and earthquakes.  It’s also famous for its blood donation program.  The organization was founded by Clara Barton in 1881 during the American Civil War.  Since then it has grown substantially, and is now a massive charitable organization of some 6,500 branches across the U.S.
Great question! The largest charities in the United States are typically private organizations that raise money and provide various forms of aid. Of particular note are the Bill & Melinda Gates Foundation, which focuses on health and development issues, and the American Cancer Society and American Heart Association, which raise money for cancer research and heart disease treatment and prevention efforts, respectively.