Answer: It's important because after winning the countries independence, many believed that everyone in the country should be free and independent from government rule in a way.
Freedom is important to Americans a lot because many people came here to America for a job and/or opportunity because back then and still now people still do look for money and a way to help their families.
This is something we can't really answer, because we don't know your experience learning spelling words. There isn't one specific answer for this problem, it's determined by the person answering it.