What were some reasons for the fall of the song dynasty

The reasons for the Song Dynasty’s fall are large bureaucracy and the war are constant and it cost too much money for the war that create more complications and wild. Also the army was run by civilians and become in effective. The political corruption also cause why the song dynasty become weak.

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.

use wikipedia, i think they have this.