Edited passage (corrections are in bold, everything else is fine):
Considered one of the most significant documents in the history of the democracy, the Magna Carta was written by thirteenth-century barons to protect their rights against King John of England. During the American Revolution, the document inspired the colonists in their pursuit of freedom.
Hope I was able to help! Feel free to leave a comment if you have any further questions :)
I think that is personification as you are giving a non living thing a living trait, if I'm wrong correct me.
<span>I think level of formality </span>
