15.) What is the name of the "Failed Rift" in the U. S.? Where did it begin and end? Your answer O This is a required question​

Rank the following from most to least devasting: ordovician,permaian,cretaceous, pleistocene

Me with this psychology homework, i’m struggling with it.

Why did the medicine lodge creek treaty fail to bring peace to west texas? a. native americans protested the sale of weapons on reservations. b. supporters of the treaty face discrimination in their own communities. c. the united states government and native americans both refused to fully carry it out. d. the united states government prevented its military from entering reservations.