There were two main compromises made at the Constitutional Convention; the Great Compromise, and the 3/5ths compromise.
The “Great Compromise,” was: the small states got equal representation (two Senators from each state) in the Senate, and the large states got proportional representation based on population in the House.
The 3/5ths compromise was when the North, who didn't have slaves, wanted slaves to not be represented when deciding the amount of representation in Congress, while the South, in order to gain more representation, wanted all slaves to be counted. So, the 3/5ths compromise was born. The 3/5ths compromise was that all slaves would be counted as 3/5ths of a person. So, not a whole person, but sill counted somewhat.
British Indian Army troops fire their rifles into a crowd of unarmed Indian civilians (1919). The Jallianwala Bagh massacre, also known as the Amritsar massacre, took place on 13 April 1919, when Acting Brigadier-General Reginald Dyer ordered troops of the British Indian Army to fire their rifles into a crowd of unarmed Indian civilians in Jallianwala Bagh, Amritsar, Punjab, killing at least 379 people and injuring over 1,200 other people.
I know there have been events misnamed before most commonly through a bad translation or spelling mishap but 90% of the time the event will be correctly labeled. As for needed resources I would recommend googling it. You will find a couple things for sure.