The civil war started because of in uncompromising differences between the free and slave states over the power of national government to prohibit slavery in the territories that had not yet became states
Answer from: Quest
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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