Answer:
The French Aristocrats was the most under attack in the French Revolution.
French Revolution was a revolt in the 18th century against the aristocrats who enjoyed the privilege of being rich and exploit the other class members. There was a scene of the insecurity due to the Estate system. The revolution overthrew the monarchy and established a republic.
Those aristocrats who were not guillotined fled to neighbouring countries like Austria and Prussia. Some escaped to start a new life in a place so obscure and started their refugee colony in Pennsylvania, America.