How many letters does the top answer for “country whose currency is the iranian rial” have?

The most common answer is iran (4 letters).

Crossword clue: country whose currency is the iranian rial

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

iran 4 letters wd-fact-v3

a theocratic Islamic republic in the Middle East in western Asia; Iran was the core of the ancient empire that was known

country whose currency is the rial 75% similar → iran

country whose currency is the omani rial 60% similar → oman

country whose currency is the yemeni rial 60% similar → yemen