How did the concepts of ""balance of power"" and ""reason of state"" influence international relations in the eighteenth century? What were the causes and results of the Seven Years' War?

"Reason of sates" is the principle that a ... Prussia, France - Diplomatic revolution was the shift of alliances in the 18th century motivated by the ideas of balance of power and reason of state. - Based on "Balance of Power" and "Reason of State" - Countries were acting in the best interest of their nation.