B and C I’m pretty sure it was also because of a problem with the O-rings on the shuttle
        
             
        
        
        
Answer:
Option:  It allowed the Plains tribes to better hunt buffalo.
Explanation:
After the discovery of America by Christopher Columbus in 1492, began the Columbian Exchange. During the Columbia Exchange, Spain introduced horses to the New World. Escaped horses spread in the Great Plains and helped the Native Indian in moving one place to another, also in hunting which changed their life. Horses spread to different tribes with horsemanship. The Plains Indians were hunters, and hunting was vital for the tribes. Earlier, they followed animal herds and hunted with bows and arrows by getting close to buffalo wearing wolf skins covering their bodies. Bison was the most important natural resource of the Plains Indians as it provided them with food,  shelter, and clothing. 
 
        
             
        
        
        
Cite other cases that come to simular conclusions.
        
             
        
        
        
Answer: Concert of Europe, in the post-Napoleonic era, the vague consensus among the European monarchies favouring preservation of the territorial and political status quo. The term assumed the responsibility and right of the great powers to intervene and impose their collective will on states threatened by internal rebellion.
Explanation: