"Russia is the largest country."

Translation: Rusio estas la plej granda lando.

[AngelPretot]

Ruslando is a valid translation for Russia.

[BenjaminRi420254]

Why is there a j on the end of 'plej'? I thought adverbs had to end in e?

[salivanto]

It's the other way around. The letter -e is an adverb ending. There's a finite list of short words which could be called adverbs and which don't need endings. Pli and plej are just two.