Answer:
The Real Reason: Plain Natives were always on the move, sort of like nomads
What WASN'T the reason: Plains Natives had settlements and never migrated
Explanation:
Plains natives were difficult to defeat because they were always on the move, so the U.S. or Mexican Army couldn't catch up to them. While natives who weren't on the move and had established settlements, were situated in a single place which would allow europeans to raid and destroy their settlement.
so, the wrong reason for why the plains nations were so difficult to defeat would be to say they were a situated settlement and were never migratory or "on the move"
Women would go and gather as well as children, women would take care of the house holds, men were the hunters, had to relocate accordingly
All of the names on the map are Irish, so the map suggests that Irish immigrants may take over the United States by the 1900s.
You
may well be right about people's fears that immigrants, lots of them
from Ireland, would overrun the country. Look up when the potato famine
was, though. The map may be from the early 1900s, but, if so, not about
the potato famine in Ireland.
I hope this helps.
It transitions the US at least from a period of negative economic aura to a high economic aura.