45: Mayflower Compact: first document to establish self-government in the American colonies.
No provisions were made for an executive branch to enforce the laws nor for a national court system to interpret them. A legislative Congress was the sole organ of the national government, but it had no power to force the states to do anything against their will.
When analyzing a source, historian has to remain unbiased and free from personal feelings and opinions. They know that there are different source of an event and they may reveal different facts which could cross-check his argument. The objective historiography is possible only when the historian is unbiased and when different sources like archaeological, literary and other sources are cross-checked and interpreted independently.