How did european immigration shift in the 1890s

I know this is late but  there has began to be a shift from mostly German immigrants to mostly Irish immigrants, although many immigrants continued to come from a variety of countries.

Hope this helps a little :)

the answer is c.richard m. nixon

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.