You can't see anything in a cave anyway however the main adaptations needed are touch and smell to stay alive and find food.
1. After the rebellion, many land owners shifted towards using African Slaves instead of indentured servitude.
2. Bacon and the rebels had been Indentured Servants.
The answer is facts.
For example let say that there are 2 statements regarding a certain object.
- The car has wheels.
- The car is the fastest car in the world.
The first statement could be considered fact because it reflected the truth and easily be proven. Bu the second sentence could only be considred as assumption because we need more data/information to confirm it.