The answer is: to act as a ceremonial role within the Senate.
The phrase 'Pro Tempore' is a latin language with the meaning of 'for the time being'. President pro tempore of the senate only elected as a ceremonial role when the actual presiding officer of the senates is unable to attend the meeting/conference.
<span>Between 1865 and 1866 Black Codes were passed to
withhold former slaves from political and civil rights. This means that the
Black Codes prohibited former slaves from voting. With this information, we can unmistakably
deduct that former slaves did not have the right to run for any seats whether
it be president, governor, senator, mayor etc. Another thing to note is that
Black Codes prohibited the carrying of weaponry. While this does not appear as
a political matter to the naked eye, it is a widely debated matter in
society. Because former slaves were not given this right we can assume that
they had no say in this matter politically; they did not have a say in passing
laws. </span>
