Answer:
U.S. Department of Agriculture.
U.S. Department of Commerce.
U.S. Department of Defense.
U.S. Department of Education.
U.S. Department of Energy.
U.S. Department of Health and Human Services.
U.S. Department of Homeland Security.
Explanation:
I think it would be trains and railroads. otherwise you walk or use a horse
Conference committees are often a necessary part of the federal legislative process because bills reviewed by these committees cannot be vetoed by the president.