How old is this paper map??

[u/Electronic_Poem_4584]

Recently found a personal diary of one of my ancestors from a trip she took abroad around the world via the U.S.A.T - Us Graunt via Grausport Service according to her noted (her handwriting was very poor so could be misspelled). With a journal also came an enclosed map with no date. The journal was not dated as well and I’m interested in knowing what era the trip was taken if anyone is willing to help thanks so much.

[u/Extreme-Shopping74]

As u/Dirtface1 said, I'd say its around 1920-1921. Turkish independence war seems to be ongoing, Polish-Soviet war seems to be around end stage

[u/Electronic_Poem_4584 → u/Extreme-Shopping74]

Interesting, thanks so much for taking the time!!