Question: what was the last volcanic eruption in the united states
Answer: 2018; 2018; 1980-05-18; 18 May 1980; 05/18/1980; 05 18 1980; 18-05-1980; 1980 05 18; 18/05/1980; 1980 May, 18; 18 05 1980; 1980-05-18; 1980 May 18; 05-18-1980