It has been changed from one man and one woman to anybody.<quoted text>
So are you admitting the definition of marriage did not begin and end with one woman and one man? That modern LGBT have not "changed" the definition of marriage after all?
That was your original claim. All proof aside, are you willing to concede you are mistaken?
What are you talking about at the end? I've already posted why incestuous relationships are no longer the norm. Do some research instead of asking silly rhetorical questions. Please!
Webster's New World Dictionary of 1968 says;
Marriage--refers to the state of or relations between a man and a woman who have become husband and wife or the ceremony marking this union.