Federal, state, and local governments.
If you are talking about them trying to expand in to present-day Canada, then it brought renewed conflict with Britain (war of 1812)
if it is towards the west, i guess it hampered technological development, because most people were moving west through the trails, instead of staying to help build up the economy
hope this helps
What is best considered a statement of public interest
The public interest is "the welfare or well-being of the general public" and society