WORLD HISTORY

Detailed explanation-1: -The aristocratic class spoke French for purposes of diplomacy in high society .

Detailed explanation-2: -French was becoming a lingua franca-a language that goes beyond the boundaries of its community of speakers and becomes a language for communication between groups not sharing a common tongue. By the 17th century, French was known as the language of diplomacy and international relations throughout the world.

Detailed explanation-3: -French is crucial for international relations and diplomacy. French is the official language of the International Olympic Committee.

Detailed explanation-4: -For the purpose of diplomacy in high society, they spoke French.