The terrestrial planets include Mars, Venus, Earth, and which other planet?

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

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.

i believe george gallup used a poll in 1936