The three-fifths compromise provided for counting slaves for representation in Congress and in the electoral college.
The alliance of Native Americans in the area with France.
An alliance is someone or group you team up with.
Most disturbing and horrific would probably be the way that workers could be mutilated by the machines or by human error and nobody would care about that. They would have to keep working without fingers or hands because not working would mean the end of their families. The injuries sometimes didn't have to be mutilation but were still severe.