The answer is: state governments
When the immigrants come into united states, they will settle on the states and will most likely have to settle to find a job in that states.
Because of this, the number of employment in that states could be threaten if the increase in the amount of workers far surpassed the increase in the amount of job opportunities. The state government would be the one that is responsible to bear such challenge.
The answer is B Biological perspective
I'm pretty sure it's B and C.
(((SHORT EXPLAINATION)))
Thomas Jefferson bought 800,000 miles worth of land from the French, (West of the Mississippi River)
Mexico was given up I'm pretty sure out of fear - and they gave the U.S. Califoria sometime too.
Hope this helps!
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