Final answer:
The document that established the first attempt of the former American colonies to organize a united government is called the Articles of Confederation.
Step-by-step explanation:
The document that established the first attempt of the former American colonies to organize a united government is called the Articles of Confederation. The Articles of Confederation were adopted by the Continental Congress in 1777 and became the first written constitution of the United States. However, it had many weaknesses and eventually led to the adoption of the Constitution in 1787.
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