Humans use lots of water.
An economy like the one America has... sorry im not sure what its called.. but basically, if there are less supplies, and more people wants it.. thats how supply and demand starts.
I think it is market economy
Airplanes and chemical warfare were technological advances during world war 1.
Answer:
The Emancipation Proclamation led the way to total abolition of slavery in the United States. With the Emancipation Proclamation, the aim of the war changed to include the freeing of slaves in addition to preserving the Union.
Explanation: