Short answers, pulled from the story.
Vasili III of Russia became Grand Prince of Moscow on the 11th of April 1502 after his father Ivan III named him successor. This succession followed the arrest of his nephew Dmitry and mother Elena of Moldavia three days prior.
Vasili III of Russia annexed Pskov in 1510 and Ryazan in 1521 to eliminate autonomous Russian territories. He also captured Smolensk from Lithuania between 1512 and 1514 with support from Prince Mikhail Glinski.
Vasili III of Russia divorced Solomonia Saburova because she had not produced an heir after over twenty years of marriage. He falsely charged her with witchcraft to justify the divorce despite clergy opposition and exiled her to a monastery.
Ivan IV succeeded Vasili III of Russia as ruler of Moscow following the birth of their son after Vasili married Elena Glinskaya. The couple consummated their marriage three days after their wedding ceremony in 1531.
Vasili III of Russia used the full title Tsar and Sovereign of All Russia in foreign correspondence after 1514. This practice expanded imperial symbolism throughout Russian governance following traditions begun by Ivan III.