17. The two things that changed the wiy the Indians waged war were A. bows and arrows. B. buffalo and spears. c. horses and hocreased number of warriors. D. guns and horses.

The introduction of guns significantly altered the dynamics of warfare among Native American tribes, enabling them to engage more effectively with both rival tribes and European settlers. This technology, which spread through trade and conflict, shifted the balance of power dramatically, as traditional weapons like bows and arrows were no longer sufficient against gunfire. Additionally, horses revolutionized the way Native American tribes approached warfare. Originally brought by the Spanish, horses facilitated quicker movements, greater mobility, and the ability to cover larger territories during raids and battles. This newfound speed and agility transformed tribal tactics and social organization, leading to more complex and dynamic forms of conflict.