As a result of the energy crisis, in 1973-1974, U.S citizens became aware of ecology. If not, their environment would be endangered.
<span>The natives felt strongly because Custer was attacking their homes, which contained women and children, and the army had a custom of taking no prisoners, killing every single person, even infants and mutilating the bodies for trophies and scalping the dead.</span>
The answer would be all of the above