The crusades had a huge financial impact on the fudal system as lords and Barrons sold assets and much of their property to Finance crusading, Manny of these men died and left their families in debt, those that were too old for war lost sons an heirs also leaving behind bebt, this led to what we would now call a great recession.
I think it is maybe priests
This date is very important because it is the day the Soviet Union broke up, it's the day the cold war ended.
J. Robert Oppenheimer is often called the "father of the atomic bomb" for leading the Manhattan Project, the program that developed the first nuclear weapon during World War II.