It was partly about Indiana Jones and partly a showcase of history for a country that tends to not learn about not only its own history but of the world in general. Talk to people in the United States and they would not know that there were battle of the Great War fought in Africa between German and Belgium forces. They might not even know what the Great War was for that matter since it was now a hundred years ago.
The tales of the 10 year old Jones were more forgettable than the teenage and year 20 year old Indy. 10 year old Jones would mostly just meet famous people while traveling with his parents (also is a wonder that Indiana doesn't have a lot of brothers and sisters considering just how much his father was chasing his mother around). Indy as a teen was off to wars and adventures from Mexico, Africa, Belgium-France, and later working during the Russian Revolution. Plus some stuff in the 20s near the end when they brought on Harrison Ford to do a little bit of Indy in the 1950s.
The tales of the 10 year old Jones were more forgettable than the teenage and year 20 year old Indy. 10 year old Jones would mostly just meet famous people while traveling with his parents (also is a wonder that Indiana doesn't have a lot of brothers and sisters considering just how much his father was chasing his mother around). Indy as a teen was off to wars and adventures from Mexico, Africa, Belgium-France, and later working during the Russian Revolution. Plus some stuff in the 20s near the end when they brought on Harrison Ford to do a little bit of Indy in the 1950s.