Which of the following was a cause of the great migration?
• expansion of cotton fields
• world war i
• civil rights movement
• the 19th amendment
• plessey v. ferguson

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.

the answer is b: an economic crisis throughout the country.