What Was the Foundational Rule of European Governments During the Eighteenth

What was the foundational rule of European governments during the eighteenth century, according to Frederick the Great?

A) Sea power was the basis of real power.
B) The government was responsible for expanding its territories.
C) A country's empire determined its greatness.
D) The charisma of a ruler determined a country's success in foreign policy.
E) The largest army always wins.