Perhaps unsurprisingly, it's mostly stuff about WWII, Vietnam, and Martin Luther King Jr.
I guess it's to be expected though - we don't exactly study the histories of other countries in great detail so it's reasonable to expect they would do the same. Just about every place on Earth emphasizes its own history above others while giving a Cliffnotes version of what everyone else was doing. Still, it's definitely interesting to see what people in other countries learn about us and how that might shape their perceptions of America.
If you're looking for a little patriotic boost, check out what people in other countries admire about the USA