The Central Government The Articles of Confederation and the Constitution are both alike and different in some ways. Let's start out with the similarities. Firstly, both the Articles of Confederation and the Constitution have a Legislative Branch of Government and a Congress. Secondly, they both made changes to the government before them. In this, I mean that when the Articles of Confederation were being written, they used the English Government as a base, and improved from there. They didn't want the president to be too powerful, like the king. The Constitution made changes to the Articles of Confederation by making a