Which of the Following Indicates the Reason for Great Britain

Which of the following indicates the reason for Great Britain to push the case for trade liberalization for as long as 80 years in the 19^th and early 20^th century?

A) Great Britain was starting to lose the military stranglehold over much of its colonies in early 19^th century .
B) The emergence of the U.S. threatened Great Britain's position as the most industrialized nation.
C) As the world's largest exporting nation, Great Briton had far more to lose from a trade war than did any other country.
D) Great Britain had experienced severe famines and droughts in the late 18^th and early 19^th century.
E) Great Britain had lost the authority to impose sanctions on its colonies in 1820s.