Answer:
litres
Explanation:
litres is the unit of volume
I think the industrial cuz when the extend the land everyone will capture the land and they should bring slaves and do farming but the farming can make the economy strong
All the good military generals and military schools were located in the South.
It seems to be "Rising Above the Gathering Storm: Energizing and Employing America for a Brighter Economic Future"
The chopper made transportation of military personnel in the war hot areas easier as it could land in any place.
The Huey helicopter also rendered trench battles obsolete. A symbol of the USA military, the chopper made rescue missions possible in the battle line.It also helped to harness a more tactical air combat.