How did Wollstonecraft, de Beauvoir, Martin Luther King, Jr., and Malcolm X each contribute to the cause of freedom in terms of their individual philosophies?

How did Wollstonecraft, de Beauvoir, Martin Luther King, Jr., and Malcolm X each contribute to the cause of freedom in terms of their individual philosophies? How does Wollstonecraft’s approach differ from de Beavoir, and how does Martin Luther King Jr.’s approach differ from Malcolm X?