How did the federal government roll in americans lives changed between 1946 and 1964? put this in 3 well written sentences I am reading the Discovery education article and I cannot find the answer it's from the history textbook on there from United States history textbook changing the role of the Federal government chapter 10.2 please no link answers​

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal