Generally speaking, it was the "indentured servants" who were considered members of the lower class in colonial society, although shoemakers could be as well, depending on their role in the process.
The correct answer is rapid industrialization
Those who had the wealth to enter the business got even more wealthy because they could exploit a system that wasn't yet monitored or regulated because it was new. Those who were simple workers became even poorer because their labor was being exploited by monopolies and cartels made by the wealthy businessmen.
Lewis and Clark, led an expedition to survey the land West of the Mississippi, request of President Thomas
Jefferson. The land that they were exploring was known as Louisiana Territory, that had been purchased from France in
1803. Lewis, Clark and the rest of their expedition began their journey
near St. Louis, Missouri, in May 1804. This group—often called the Corps
of Discovery by historians—faced nearly every obstacle and hardship imaginable on their trip.
Department of Labor This department is responsible for making sure America has a strong workforce. It works on job training, safe working conditions, minimum wage, discrimination in the workplace, and unemployment insurance.
The purpose of the Department of Labor is to foster, promote, and develop the welfare of the wage earners, job seekers, and retirees<span> of the United States; improve working conditions; advance opportunities for profitable employment; and assure work-related benefits and rights.</span>
The Japanese justified their imperialism in multiple different ways, depending on what territory is in question.
For China, there was a fake attack on Japanese property, performed by the Japanese themselves, so they invaded Manchuria with the justification that their citizens were in danger.
Korea and Taiwan were justified in the sense that some countries had colonies which they used for resources and as market for their products, so the Japanese justified it in the manner that they also deserve to have such territories.
For some territories they conquered there was no real justification though, and the Japanese didn't really bothered with making excuses anymore.