The correct answer, in terms of SMART financial planning, is B (She is reviewing her goals and aligning the budget to work toward them).
D. Plains Indians started hunting buffalo more efficiently.
This helped them move more accessibly throughout the land.
Carbon 14, or radiocarbon dating method
It depends on how one looks at Columbus, in some terms he was a hero for finding Spain more land & cultivating it in a way. He was also a Villian for the way he treated American natives.
Just 3 reasons? ok then, they were unprepared for the desert climate, they had a poor reputation with the locals, and they were considered "devils" so no one wanted anything to do with them.