The correct answer for 1 is
Congress did not have the power to tax the states. This was problematic because the federal government established by the articles could not tax people and could not have a state budget which could not fund the military or anything similar that it was supposed to do.
The correct answer for 2 is
No entity. It was only after during the debates on the constitution and the declaration of independence that ideas of a bicameral government were made when a compromise had to be made in order to respect both the smaller states that were developing and the already established ones.
The correct answer for 3 is
To establish a legal basis for a permanent government of the new United States. They believed that it was necessary to make something like a federal government for all of the colonies because it could then represent all colonies in negotiations with the British crown, but it ended in a war and the first national government that was federal and republican.
