Why do historians observe objects, art or written material created throughout history ?

Which one of the following figures was not a major leader of a latin american independence movement? a) simon bolívar b) ignaious of loyola c) josé de san martin d) father hidalgo e) francisco de miranda

Those who resisted the mongol invaders were attacked and their towns burned; those who cooperated with them also were attacked and had their towns burned. were treated fairly. were taken into the tribes and treated as mongols. were sent away to find new homes.

Which of these works from the italian renaissance exhibits contrapposto?