Which of the following statements is FALSE?
a. The U. S. offensive in 1874 forced many Native American tribes that resisted moving to the reservations to hide out in canyons.
b. The Red River Campaign was sparked by the Adobe Walls attack.
c. Colonel Mackenzie attempted to find a peaceful resolution with further negotiations during the U. S. offensive.
d. In the Palo Duro Canyon attack, the U. S. calvary killed horses and destroyed supplies, which forced Native Americans to flee and surrender.