A lot of things are necessary to make sure your work won't be seen as plagiarism. For example it is useful to keep research notes that show your work flow. If you do use other sources, make sure to cite them and especially If you quote them make sure you use citation marks and give the source.
I know it's late, but it's Eve.
Answer:
What were the "cures" they had?
what were the early stages of the disease?
How was it spread?
Answer:
That was Colonel Edwin Vose Sumner
Explanation:
Edwin Vose Sumner was a United States Army officer who became a Union Army general. He was the oldest field commander of any Army Corps on either side during the American Civil War. He led the second Corps of the Army of the Potomac through the Peninsula Campaign, the Seven Days Battles, the Maryland Campaign, and the Right Grand Division of the Army during the Battle of Fredericksburg. Sumner fought in the Black Hawk War, with distinction in the Mexican–American War, on the Western frontier, and in the Eastern Theater for the first half of the Civil War.
Some of the responsibilities of vassals for the lord included: Maintain the Lord's manor...Watch over day-to-day activities...And occasionally help advise the king on simple matters of the land.