Answer:
Southerners otherwise known as the Northern Song Dynasty.
Explanation:
They committed late to the Mongolian empire so they are lowest in class.
Europeans didn't use maritime routes before the age of exploration because they thought that Muslims controlling Portugal and Spain made maritime routes unsafe together with the fact that they didn't have the required transportation and navigation skills to travel.
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A strict policy of neutrality, the United States would not entangle itself with alliances with other nations.
Basically education reformers believe that public
education would have a positive effect on the United States such as the one
constant for all forms of education reform includes the idea that small changes
in education will have large social returns in citizen health, wealth and
well-being. There may be a reduce cost to students and society since education
reformers desire to make public education into a market in the form of an
input-output system where accountability creates high-stakes from curriculum
standards tied to standardized tests.