Marshall's legal skill further reinforced the national government's power over the states. The Supreme Court's decision in McCulloch v. Maryland (1819), upholding the constitutionality of the national bank, broadly interpreted the “necessary and proper” clause of Article 1, section 8 of the Constitution. On February 24, 1803, the Supreme Court, led by Chief Justice John Marshall, decides the landmark case of William Marbury versus James Madison, Secretary of State of the United States and confirms the legal principle of judicial review—the ability of the Supreme Court to limit Congressional power by declaring ... Over the course of his 34-year term as chief justice, Marshall delivered more than 1,000 decisions and penned more than 500 opinions. He played a pivotal role in determining the Supreme Court's role in federal government, establishing it as the ultimate authority in interpreting the Constitution.
There were new crops; tools and farming methods, which helped, increase food production. These changes meant less death to smaller colonies, and overall improve the state of living. They now could live longer and have better sanitation compared to the earlier imperialism.
