Introduction of horses in America made life easier because it made transportation more efficient; people could travel, deliver messages, or trade quicker than before.
So lets say you found farming tools then a secondary source would be like telling how they farmed so you can see how they used those tools. in an example say i said that the native Americans rode on horses were did they ride those horses? i hope this helps
Answer:
A. People who questioned Hindu beliefs.
Explanation:
It started a period of violence known as bleeding kansas