1)
Was Batzrah not in Mo'av?! Why was Melech Edom from there?
1.
Rashi: Indeed it was; and because they provided Edom with a king, in the time of Mashi'ach, they will be slaughtered together with them. 1
1
As the Pasuk informs us in Yeshayah 34:6. But refer to 36:31:1:2. See also Ba'al ha'Turim.