Answer: I believe it is B but am not 100% sure
Explanation:
There is many reason, one way they could've been worried about is if the
new settlers would make war or take their land and food.
Another way is that they could've cause the Mexican to come of their land.
Hope it helped
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The Department of Homeland Security. Right after the 9/11 attack, the central government moved rapidly to build up a security structure to shield our nation from vast scale assaults coordinated from abroad, while upgrading elected, state, and nearby abilities to plan for, react to, and recuperate from dangers and fiascos at home.
Real GDP per capital and Gross National Income Per Capita
