Answer:
law of original horizontality
law of superposition
law of original lateral continuity
law of cross-cutting relationships
Bias and prejudice is basically when someone has hate toward another group of people or dislike that group of people because they don’t have the same beliefs or view points some people don’t even know that they are doing it which is called unconscious bias and some people do it and don’t care. Hope this helped
The interesting this about the people oft he Ancient Indus Valley is that the people seem to have just disappeared, and historians and archeologists cannot figure out what happened.