ABANDONED. YA World is in a medieval stasis, protagonist is a native and aliens arrive and try to help him discover why

[Ana]

"The protagonist lives in a civilization that has been in the middle-ages for more than 1000 (?) years. He comes into contact with beings from another world (who are actually humans) and he discovers that they also passed through a middle-age - but it lasted much less than in his world.
The protagonist, with the help of this alien-human, go on an adventure together to find out what caused his planet's prolonged middle age..."
YEAR: 2009 ~2012

[SBC]

It sounds familiar. Possibly something by Sylvia Engdahl, maybe This Star Shall Abide?

[Kris]

Ana, did you read this book?

[Ana]

Kris wrote: "Ana, did you read this book?"
No, I didn't :(
Someone recommended it to me but I lost contact with this person and now I can't find it anywhere.

[Ana]

SBC wrote: "It sounds familiar. Possibly something by Sylvia Engdahl, maybe This Star Shall Abide?"
It is not this book, but thank you for your help!

[Cori]

I just found this author, it may be more in the New Adult then YA category but Sherwood Smith is the Author's name
the Inda series?
I'm reading Sword of Truth at the moment which is in the same world.

[Rainbowheart]

Inda for the link to Cori's suggestion.

[Kris]

No response, moving to Abandoned folder.

Ana (OP) was last active on the site in October 2020.