What did the article of confederation ratify

Articles of Confederation created an association of sovereign states. The central government's role was small. No power to regulate commerce and no power to tax. Any change needed to be approved by all states.

Explanation:

d. it adversely affected american productivity

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.