Twigs?
There are no countries (in English) with names five letters long with "s" as the second letter.
Bambi
Bison
These are the first five letters on the second line of your keyboard.
angelangerangleangryenemyenterentryenvoyincurindexingotintrokneelknockonionsnailsneaksniffunionunityuntilunzip
Ulan Bator
Atria
Clone.
sprig
levee
Resto?
The answer is Helium. It has five letters and the second letter is E. Helium is a chemical element with the symbol He and atomic number 2 on the periodic table.