system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does an unknown soldier end up in a cemetery in America?

I understand that uniforms designate if they were American or not but I noticed while doing some genealogy research that there are many states that have unknown soldiers from various wars. For example if there was an unknown American soldier that died during Normandy how do they choose to bury him in Kansas as opposed to Oklahoma?
gpt
The unknown soldier is a concept.  He /She is the idea that there is many many that died in far away and in closer lands that never got a decent burial.No reward ,no fan fare and that to them we also owe a thank you and respect. The soldier in the tomb is nameless so that all the fallen can be remembered. 

EDIT: Unless OP meant how does an unidentified soldiers body get  back to America with out being properly identified. In which case loss of dog-tags and separation from original unit can lead to mis identification, add to that severe damage to the body. There is a lot of KIA and MIA that we will never be sure where they actually lay.Some could be home.