The Song political system a. dissolved its entire military structure to save money for trading activities. b. was run by a female emperor during the late Yuan dynasty. c. developed the equivalent of a modern cabinet within its Department of State Affairs. d. restored Legalism as its supporting official philosophy. e. was able to solve the problem of nomadic invasions by using its new fire-lance to exterminate nomadic cavalry.

Was able to solve the problem of nomadic invasion by using its new fire Lance to exterminate nomadic calvary

Explanation:

Production of gunpowder to help the military

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.

a drastic rise in oil prices ended decades of postwar.