3. Describe the national government created by the U. S. Constitution. Be sure to define the separate branches of government established by the Constitution and the purpose of each branch. You should also describe the relationship of the national government to the state governments. Then explain why the founders adopted the “elastic clause”—also known as the “necessary and proper clause”—as part of the Constitution, and describe what that clause demonstrates about the founders’ vision for the government of the United States.