Answer:
C
Explanation: just look at cartels and murder rate in mexico, or the sheet metal villages in brazil.
The flooding of the Nile was so important to the Egyptian civilization because the thick rich mud was excellent soil. This made it great for them because they could plant seeds in it and grow crops.
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It allows for foriegn countries to send refugees if the refugees helped america out.
Answer: people that weren't Mexican also tried to settle on Mexican land.
Dred Scott (c. 1799 – September 17, 1858) was an enslaved African-American man in the United States who unsuccessfully sued for his freedom and that of his wife, Harriet Robinson Scott, and their two daughters in the Dred Scott v. Sandford case of 1857, popularly known as the "Dred Scott decision".