Nation's just like people have destinies. Thus, God addresses nations the same way that he addresses individuals in our Holy Book. He regards them as the subject, for example, he says, "the societies that think," and "the society that changes itself." The subject is the fate/destiny of the person, thus when a society is the subject, it too has a destiny. The person that is the subject is the khaliph. He is a piece of God's spirit, he uses his will. He chooses good or evil. The person who is the subject, is a creation that is independent. This same principle applies to societies as well. Societies have wills too and can use it in the same way. Societies that make preferences and side with the truth are independent.