Read the Articles of Confederation and the Constitution through the National Archives on this site: http://www.archives.gov/.

How the Constitution addressed the complaints in the Declaration of Independence
How the Constitution addressed the weaknesses in the Articles of Confederation
What the Great Compromise was and how representation of states in Congress is determined

Include a more detailed discussion of ONLY ONE of the following topics in your paper:

The method of election for officials in the U.S. House of Representatives, Senate, and executive branch
The Electoral College and the indirect election of senators
The treatment of slaves for the purpose of representation and the consequences of those decisions
Methods of amendment
The commerce clause and its significance
The method of ratification of the original Constitution
The Bill of Rights