Which one is my resident country if I moved mid-year?

I'm a US citizen (dual, but that likely won't matter) and lived and worked in the US until August, 2021. Then in September, I moved abroad and I live and work now in a foreign country. I've spent more than 330 days now in this foreign country and plan to remain here.

 

Q: when TT asks my resident country, which one should I enter for 2021? USA, as I lived more there in 2021, or the foreign country, as I've been living in that country for a year now?