During the early 19th century, laws created in the southern states
concerning free blacks were primarily intended to
(a) guarantee legal status to free blacks
(b) establish guidelines for abolition within the state
(c) establish clear rules and regulations for the treatment of slaves
(d) persuade free blacks to relocate to northern states
(e) aid the reclaiming of runaway slaves

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.