$3$

In $1557,$ the third Dalai Lama accepted an invitation to visit with Mongolia's Altan Khan. As a result of that visit.

$6$

A$)$ Tibetan monasteries becapne Mongol castles.

$9$

Tibetan Buddhism became the official religion of the Mongols.

$42$

$**$

Tibetan monasteries were moved to Mongolia.

$15$

$01$ sacrifice.