Answer:
Totally Unjustified
Step-by-step explanation:
The reasons for this racial genocide were multi-layered. Settlers, most of whom had been barred from inheriting property in Europe, arrived on American shores hungry for Indian land—and the abundant natural resources that came with it. Indians’ collusion with the British during the American Revolution and the War of 1812 exacerbated American hostility and suspicion toward them. Even more fundamentally, indigenous people were just too different: Their skin was dark. Their languages were foreign. And their world views and spiritual beliefs were beyond most white men’s comprehension. To settlers fearful that a loved one might become the next Mary Campbell, all this stoked racial hatred and paranoia, making it easy to paint indigenous peoples as pagan savages who must be killed in the name of civilization and Christianity.
Below is a list of wars with the us that are either justified or not
American Revolution- Totally Justified 
Quasi War- Justified 
Barbary Wars- Justified 
War of 1812- Lean Justified 
Indian Wars- Totally Unjustified 
Mexican American War- Justified 
Civil War- Totally Justified 
Spanish American War- Lean Unjustified 
Philippine American War- Totally Unjustified 
World War 1- neither justified or Unjustified, 
Pacific Front of World War 2- Totally Justified 
European Front of World War 2- Totally Justified 
Korean War- Justified 
Vietnam War- Unjustified 
Grenada Invasion- lean justified 
Panama Invasion - lean unjustified 
Gulf War- Justified 
Kosovo War- lean unjustified 
Afghanistan War- Justified 
Iraq War- Unjustified 
Libyan War- Lean Unjustified 
ISIS War- Justified