A) Rousseau
Rousseau strongly believed that man was better of in his natural state.
Do you mean in the Soviet flag? If so here is your answer.
Answer: Communist symbol, hammer for industrial labors, and the sickle stands for the peasantry.
The answer that you are looking for would be General Robert E. Lee
Who surrended To General Grant
Common diseases in medieval Europe were dysentery, malaria, diphtheria, flu, typhoid, smallpox and leprosy.