Yes, it is true that historians believe that the time from prehistory to the development of agriculture spans more than two million years, since it is thought that humans first appeared on Earth roughly six millions years ago.
Answer:
The Dred Scott case ruled that slaves are property. Even if you move to a different state, that is a free state, your slave is still your property. It was brought up because Dred Scott’s owner moved to a northern state and he thought that he should be a free man.
Explanation:
