The 1920s was a period of economic prosperity for the united states as a result of a) world war i. b) world war ii. c) the cold war. d) the civil war.

wron! its world war 1

the correct answer is to reduce tax

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.