Who lived in the boomtowns that formed during the California gold rush?

The 49rs

Explanation:

The people who moved to California during the Gold Rush were called the 49ers

The  forty niners  are a group of forty nine people.

Due to the gold rush california had only about 14,000 non Native Americans. This quickly changed. In 1848  around 6,000 people arrived and in 1849  approximately 90,000 people arrived to search for gold. The Fortyniners were the name given to this group of people.

Explanation:

answer=(oversee the conversion of peacetime industry to war industry)

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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.