I AM NOT AMERICAN PLEASE HELP :) How does America's economy contribute to the growth of the country?

Such gains arise in a number of ways. Expanding the production of America's most competitive industries and products, through exports, raises U.S. incomes. Shifting production to the most competitive areas of our economy helps raise the productivity of the average American worker and through that the income they earn.

Explanation:

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )