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.
Judicial Review is the Court's Examination of the Constitutionality of the actions of Congress and the President (and the court's right to nullify what the other branches of government have done if they find it unconstitutional). This process was first established by the Marbury v. Madison Supreme Court Case.
You can get a lawyer or you can plead the fifth...right to be silent. Check out the 5th amendment in the Constitution. The answer's right there.
Democracy means the government made for the people, by the people and of the people. To make the democracy successful, rulers and ruled should be responsible about their code of conducts.
To institutionalize the democracy, people have to make a right choice about selecting their leader. They must have the knowledge about all the leaders and government policies. The people have to be aware about the responsibility and right that comes on them in democracy.
The ruler selected by the public should know the necessary policies for the welfare of the economy and the public. He must be fair in his conduct and work for the betterment.