Answer:
Ivan III stopped sending tributes to the Tatar court.
Ivan III deported boyars he considered troublemakers.
Russians were encouraged to believe that Moscow had become the new center of Christianity.
Step-by-step explanation:
Ivan III Vasilyevich of Russia was known for his expansion idea of Moscow. During his time, he was known to have expelled Boyars he considered as troublemakers from Moscow. This he believed was one of the many ways to take the full hold of the region.
Again, in his bid to consolidate power, he adopted the idea of Moscow as Third Rome which could serves as the center of Christianity.
He also opposed the idea of paying Tribute to Tatar around the middle of 1470s.
Hence, the correct answers are: Ivan III stopped sending tributes to the Tatar court.
Ivan III deported boyars he considered troublemakers.
Russians were encouraged to believe that Moscow had become the new center of Christianity.