Generally speaking, groupthink occurs in "<span>highly cohesive groups where there is a great deal of pressure to agree with each other," since this can lead to highly irrational decision-making. </span>
So they could stand together to get equal rights and wages
I do not have your choices of "the following" Here are some reasons I learned: Christianity, empire was too big and became hard to manage, there were many nonromans attacking parts of empire- Goths, the emperors themselves were weak or insane intrigue was rampant.
Radio played a powerful and important role in the Great Depression for Americans, since it provided entertainment and a sense of comfort, especially when FDR would give his "fireside chats".
Answer:
The Scallop Shell.
The Pearl.
The Mirror and Girdle.
The Rose.
The Pomegranate.
The Dove, Sparrow, and Swan.
Explanation: