What is one of the reason why accidents happened in factories in the late 1800s and early 1900s

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .

Why was louis armstrong considered a jazz legend