The most accurate statement regarding the aftermath of the Sand Creek Massacre is:
The U.S. government came to condemn the incident because so many women and children were murdered.
The Sand Creek Massacre, which occurred in 1864 when Colorado U.S. Volunteer Cavalry attacked a peaceful Cheyenne and Arapaho village, resulted in a significant public outcry and condemnation from some segments of the American public and government due to the brutal nature of the attack and the killing of women and children. It highlighted the atrocities committed against Native Americans and led to increasing criticism of the U.S. government's policies towards Indigenous peoples at that time.