Name at least one American Indian clan or tribe to which an artifact was returned because of this act. What artifact was returned?

Explanation:

The Act in question is not mentioned however I believe it to be the Native American Graves Protection and Repatriation Act of 1990.

In what has been hailed as a very significant step in righting the wrongs meted out on the Native Americans in regards to their culture and rights, the Act required that all Federal agencies as well as agencies receiving federal funding should return any Native American items, human remains and artefacts back to the rightful Native tribes.

One Native American tribe that has benefitted from this are the Tinglit Alaskan tribal group. Under the Act, a 40-foot-tall totem stolen by John Barrymore from an abandoned village in 1931 and then donated to the Honolulu Museum of Art has been returned to them.