What is the crossword answer for the clue: Nicholas II was the last one

CZAR - a 4 letter word may be the answer you are looking for!

TSAR - a 4 letter word may be the answer you are looking for!

RHO - a 3 letter word may be the answer you are looking for!

TSAROFRUSSIA - a 12 letter word may be the answer you are looking for!

Nicholas II was the last one

3 Character Answers:

RHO

4 Character Answers:

CZAR

TSAR

12 Character Answers:

TSAROFRUSSIA