Who are the “bourgeoisie”? What are “bourgeois family” and “bourgeois property?” What role have

Who are the “bourgeoisie”? What are “bourgeois family” and “bourgeois property?” What role have they played in Marx’s theory of history?
What does Engels say about the role of reason in the French Revolution and the age of revolutions it sparked? How does Engels believe Marx built on this “reason” and on what grounds does he claim that socialism, in Marx’s hands, “became a science”?
Engels believes that, under the influence of the revolution of the proletariat, the State “renders itself unnecessary.” What does Engels mean by the “state”? How will it render itself unnecessary?
What does Engels mean by “freedom”? How does his definition differ from definitions we might be more familiar with?