During the Reconstruction era, the federal government made an effort to A
reinstitute pre-Civil War norms in the South
B
lower taxes for both northern and southern states
с
improve the legal and social status of Black people
D

lessen the impact of regulations on businesses

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 .