Manifest Destiny is the belief that Americans had the right, or even the duty, to expand westward across the North American continent from the Atlantic Ocean to the Pacific Ocean. This would spread the glorious institutions of civilization and democracy to the barbaric Native Americans.
Answer: The U.S. Supreme Court case Marbury v. Madison (1803) established the principle of judicial review—the power of the federal courts to declare legislative and executive acts unconstitutional. The unanimous opinion was written by Chief Justice John Marshall.
Explanation: I learnt this already.
A. thats not really essential
With the passage of the 1964 Civil Rights Act, the federal government offered its immense power to the struggle to realize a more just and inclusive American society that had begun a century earlier with Reconstruction. But passage of the act was not the end of the story. The act did not fulfill all of the goals of civil rights activists. It would take further grassroots mobilization, judicial precedent, and legislative action to guarantee civil rights for African Americans.