What led to the strengthening of ties between Moscow and Crimea?

The text states that at the end of the 15th century, a temporary military-political alliance was formed between Kazan, Crimea, and Moscow. This alliance was accompanied by an intensification of socio-economic and cultural ties. Later, after the Crimean Khanate's victory over the Great Horde in 1502 and Moscow's victory over the Lithuanians, Moscow and Crimea became powerful states in the region, but their allied relations began to weaken.