In 1860, abraham lincoln was elected to the presidential office by a majority vote because both the free states and the slave states agreed with his views.
a. true
b. false

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john hunter was a scottish surgeon, he was a early advocate of careful observation and scientific method in medicine,

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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.