How did the decision marbury v. madison promote the significance of the supreme court as a branch equal to legislative and executive branches?

The main way in which the decision Marbury v. Madison promoted the significance of the Supreme Court as a branch equal to legislative and executive branches is that it gave them ability to declare certain laws unconstitutional. 

"d. the battle of quebec began the french and indian war and the attack on fort duquesne ended it." is your answer this is because the war and attack included washington and his people.