Final answer:
The Congress under the Articles of Confederation was known as the Congress of the Confederation, a unicameral body without a separate executive or judiciary, serving from 1781 to 1789.
Step-by-step explanation:
The legislative body formed under the Articles of Confederation (AOC) was known as the Congress of the Confederation. This congress served as the national government of the United States from 1781 to 1789. The Articles of Confederation provided for a unicameral legislature, which means there was only one house or chamber, without a separate executive or judiciary. The Congress of the Confederation followed the Second Continental Congress, which had been the de facto government during the American Revolutionary War. Notably, the position of 'president' within the Congress of the Confederation was not an executive role like the modern presidency, but rather the title for the presiding officer of the Congress.