Which leader was an influential Republican president during the Civil War who signed the document to end slavery in the US?
A.
Abraham Lincoln
B.
Ulysses S. Grant
C.
Theodore Roosevelt
D.
George H. W. Bush

Please select the best answer from the choices provided

A
B
C
D

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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.

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