What was the first action taken by the congress?

The first action taken by Congress was that of passing an act to regulate the time and manner of administering certain oaths.

Explanation:

New York City was chosen as the temporary capital of the United States and the first Congress met here in March 1789.The issues on the unwritten agenda were that of creating a treasury, a war machinery, a foreign affairs department, a sound tax system, a strong judiciary, etc.All of these issues were considered by the Congress one by one and the offices for the same were established by passing necessary laws through the next few meetings of the Congress.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.