The Magna Carta was a Latin Document that was for freedom. The Mayflower Compact was a set of rules self-governance established by the English settlers who traveled to the New World on the Mayflower.
Hope this helped just a bit. ¯\_(ツ)_/¯
Answer:
It was different because there was a higher number of Britians and a lower number of French, causing a culture more influenced by the British, that was why it was important.
People such as John Locke, (who the colonists looked up into his writing), believed that people were born with natural rights, such as life, liberty, and property. The colonists in America believed similar, and got inspiration from what John Locke wrote in a book.