What are the 2 form of historical sources

Primary sources and secondary sources, like a book would be a secondary source and a coin made by a Roman would be a primary source.

Hope this helps!

Primary sources and secondary sources, like a book would be a secondary source and a coin made by a Roman would be a primary source.

i also think it is c

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.