They should interview other people who fought in that same war ( which would be back up witness for these two different accounts). So whoever has the most back up witnesses must be telling the truth ( also make sure the other people you interview don't know they are back up witness).
Answer:
Emperor Charles VI created Lichtenstein
The answer is t<span>he river is constantly changing </span>
During the golden age of the Islamic empire,many advancements were made in lots of different areas.New forms of art were created,and new ways of thinking including the beginnings of the mathematics system of algebra emerged as well.
hope it helps. :)