Why did plantation owners think they needed slaves?

How will you raise money to equip an army and build a navy. mention specific ideas

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 .

During he 1840s, more americans than british settled in the oregon country. how do you think this settlement influenced negotiations with the british over the territory