I think D is the answer. I may be incorrect, though.
Ans: It redrew the world map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland, the Baltics, and Finland. The Austro-Hungarian Empire dissolved into Austria, Hungary, Czechoslovakia, and Yugoslavia. The German Empire became Germany, and Germany lost substantial territory outside Europe.
1: James Madison created the constitution. It was created for to give citizens rights and freedom.
2: http://www.crf-usa.org/bill-of-rights-in-action/bria-25-2-the-major-debates-at-the-constitutional-convention.html
4: The three branches of government are Executive, Legislative, and Judicial.
5: checks and balances were created to have equal power, neither branch as more or less power. They are all equal power.