Why did the united states become involved in the korean war?

Primarily because of the threat of Communist expansion by China, along with fear that the SU was working with China to create bombs. Plus, Korea was positioned at the 38th Parallel, which makes it an important point to hold in the area for political control.

Explanation:

what are local authorities doing to fix the problem

explanation: what are local authorities doing to fix the problem

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.