Key philosophies<span> in the Declaration of Independence were based upon ideas first expressed by european philosophers</span>
Answer: The Magna Carta was a contract signed by king John in 1215. It implied that the king would not violate rights again. Why Magna Carta was important because it limited power of rulers. It also introduced the idea or writing humans rights. The reason the Magna Carta was signed and existed as a contract because the abuse of power by tyrant. The people wanted equality in the power they wanted a say so.
I hope this helps :)
The answer is writing The Feminine Mystique. Just google "What is Betty Friedan famous for?". You will get she is famous for <span>writing The Feminine Mystique.</span>