Question

One of the primary causes of economic prosperity in the 1920s was due to new developments in _____________, which in turn led to economic prosperity in other sectors such as oil, glass, tourism, and road-building.

Answer 1

Advancement in technology had played an important factor in the economic boom in the United States. Because of the advancement in technology had allowed  mass production on sold goods as well as technology has encourage automobile manufacturing that had cause had lead to constructions of road as well as oil manufacturing, glass manufacturing and tourism.

Answer 2

One of the main and primary causes why there was a dramatic economic prosperity in the 1920s was due to the developments which happened in the automobile industry (and generally in technology) with the mass advent of technological prosperity the other mentioned sectors were also drastically affected.