Which period does the gilded age refer to and why it is so called?

-Describe the period of American history from the end of the Civil War to the beginning of the 20th century;

-reason: because many people became extremely rich during this period, they also lived a golden life because of their money;

The growth of industry and the tide of immigration have become the characteristics of this period in American history.

The output of iron and steel has increased rapidly, and the demand for resources such as wood, gold and silver in the west has also increased greatly due to the need to improve the transportation system. With the development of railways, the rich resources in the west can be continuously transported to the east. There was also a great demand for steel and oil at that time.

Due to industrialization, many people have created considerable wealth. For example, john rockefeller became rich because of oil, and andrew carnegie became rich because of steel. Because these people earn a lot of wealth by buying low and selling high, they are all called "robber barons".