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In Chicago, this building was renamed to the "Willis Tower" They planned on reintroducing this building to the world.
Sudan is often not included as a country of the Sub-Saharan Region because a portion of the Sahara Desert is within the country. Also in terms of demographics, history, and culture Sudan is usually considered part of North Africa and the broader "Arab World."
The answer is B because the trees would help hold the soil in place helping to prevent erosion
because in the inner core ,the pressure in the core is also higher,and you can have solid inor-nickel instead of liquid