How is the definition of realism different from the other three definitions?

Draw conclusions  why might a cause like italian unification successfully draw people of very different backgrounds together?  

In 2001 mexico imposed a 20% tax on all soft drinks not made from sugar cane high fractals corn sit-up which is made from corn, is often used in place of cane sugar to manufacture soft drinks. which nation would most likely be impacted by mexico’s policy change?

How did many delegates from northern states at the constitutionalconvention view slavery?