The pairing includes that Congress could not tax the states directly and its was a unicameral body.
The Article of confederation was the first written constitution which contains law and regulation of the United State while practicing the Confederation style of government.
The Confederation style is characterized by given the States greater power than the Central government.
The United States Constitution however prioritize Federalism over Confederacy and it created 3 distinct branch of government
In conclusion, the power which were both found in the Article of confederationand Constitution is that the "Congress could not tax the states directly" and the "Congress is a unicameral body".
