Political Development of
History of the Song Dynasty
Politics of the Song Dynasty
Civil Service Exam
Shen is most known for being interested in geology.n Powders lead to early types of bombs ,cannons, rockets
Compasses were a very big thing most compasses didn't have a cover so it got destroyed and then the Songs came up with a idea to cover so when they are in the water it doesn't break and they can use wherever they are.