I made these several years ago using impress.js and a lot of time that I don't have any more. You are welcome to use these as you see fit.
This one was designed for 8th graders, and it covers the basics of the first successful presidential election in the United States.
I built this for an AP US History (APUSH) class that had extra time during their 1920s unit, and they voted on this. It talks about Corruption, Crime, Racism/Xenophobia, and Communism in the 1920s.
I made this for a sophomore honors level English class that needed a primer on Communism. It covers the basics and offers a beard score for each of communism's early, important figures.
This is aimed at a junior level US History class. It covers both the reasons for the war and the subsequent costs. Note that none of my presentations advances any particular viewpoint, but does cover the major ones that existed at the time.