What are the traditional industries in the United States?

I don't think there are any traditional industries.

There are three industrial revolutions in history, the first one originated in central England, the second one originated in the United States and Germany, and the third one originated in the United States.

The symbol of the first industrial revolution was the widespread use of steam engines as power machines; The symbol of the second industrial revolution is the extensive use of electricity and new energy. The third industrial science and technology revolution is another great leap in the field of science and technology after the steam technology revolution and the electric power technology revolution in the history of human civilization. It is marked by the wide application of atomic energy, computer and space technology, and involves an information control technology revolution in many fields such as information technology, new energy technology, new material technology, biotechnology, space technology and marine technology.

If the leading industry of the first industrial revolution was textile, then the second was steel, and the third was atomic energy, computer and space technology. The gross national product at that time was less than that at that time, but it was replaced once, so there was no traditional industry.