Who was the first Russian leader to be proclaimed tsar? Select one answer: Ivan III Vasilii II Vasilii III ) Ivan IV the Terrible

The correct answer is Vasilii II. Vasilii II, also known as Vasilii the Second, was the first Russian leader to be proclaimed as tsar in 1462. He was the Grand Prince of Moscow and the first ruler to assume the title of tsar, which signified his claim to the legacy of the Byzantine Empire. This move was part of his efforts to strengthen his position and assert his authority over other Russian principalities.