The mound builders of the Mississippi River were some of the first intensive farmers of North America's eastern woodlands.
I’m not sure what the answer is but I hope someone can help you. Have a great day
Answer:
The department of labor.
Explanation:
Since nothing was done about it after the complaints were made, The workers should report this incident to the department of labor. The department of labor is a United States federal government department. Some of its responsibility has to do with safety (occupation), wages, unemployment benefits. This department guarantees that workers have a good and fair working environment as well as safe and healthy work environments.
Wheat and corn is the correct answer I think