Which of these periods in U. S. history occurred first? F. Great Depression
G. Progressive Era
H. Cold War
J. Gilded Age

The Great Depression was in August 1929 – March 1933
Progressive era was in 1897 – 1920
The Cold War was in 1947 – 1991
And the gilded age was in the 1870s

So the progressive era started first.

  the domino theory states that  if one country in a region came under the influence of communism, then the surrounding countries would follow in a  domino  effect.

Do you have any answer choices to choose from?