Which of the following was made possible by the fourteenth amendment?

state governments were able to pay back money owed after the war.
state governments had the power to pass laws to protect civil rights.
emancipated slaves select their government representatives.
emancipated slaves had full citizenship under the law.

arresting and exicuting citizens

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.