Answer:
B - sub-Sahara Africa
Explanation:
this region is already very dry - there has been over grazing of animals - deforestation that speeds up desertfication
Answer:

Explanation:
Given

See attachment
Required
Find 
To do this, we make use of the following theorem
--- angle at the center and angle between two tangents add up to 180 (i.e. they are supplementary angles)
So, we have:

Collect like terms


No barriers to trade from nation to nation
Answer:
Health Insurance Portability And Accountability Act (HIPAA)
Explanation:
Answer:
all of the above.
Explanation:
in ww1 president Wilson kept the U.S out of the war but after intercepting a letter from Germany to Mexico saying to declare war on the U.S that they would help them regain the border states Texas, Arizona, New Mexico etc.