Identify and explain the importance of two early advancements
made by ancient civilizations.

- "the four new england colonies of colonial america included colonies of new hampshire, massachusetts bay colony, rhode island and connecticut."

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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.