Why was the 1920s called the roaring twenties?
a. the decade ushered in the beginning of radio programming.
b.
the decade ushered in several new and noisy fads.
c. the decade ushered in an era of prosperity and rebellion.
d. the decade ushered in an era of protest and dissatisfaction.

Correct answer choice is:

C. The decade ushered in an era of prosperity and rebellion.

Explanation:

The 1920's was a time of exciting cultural and political revolution. For the first time, numerous Americans relished in cities than on farms. The nation's entire property more than doubled in 1920 and 1929, and this financial germination cleaned many Americans into a wealthy but strange “customer civilization.”

b)

it created free trade throughout the colonial territories.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.