How did the end of ww1 slow the economic boom in the U. S. ?

The long term effect was that US involvement in the war lead directly to the Great Depression and WWII. The Treaty of Versailles led to a system where the US was cashing in its wartime loans to the UK, which in turn was using the wartime reparations it received from Germany to pay off the US.

Explanation:

sorry i do not know this

d) a constitutional amendment