The first one "Both dynasties promoted in principles of Buddhism." is one of them (I'm positive) and I'm thinking the lats one "Both dynasties maintained a standing Army, but I'm not positive about this one!!
Answer:
Reconquista, Spanish Inquisition, conquistadors travel to new world, then convert the conquered colonies to Christianity
The Counter-Reformation (Latin: Contrareformatio), also called the Catholic Reformation (Latin: Reformatio Catholica) or the Catholic Revival,[1] was the period of Catholic resurgence that was initiated in response to the Protestant Reformation.
Source - Wikipedia
While, B. Constantine, reigned as emperor from 306 A.D to 337 A.D., Christianity began to transition into the dominant religion of the Roman Empire.
The Ghost Dance. During a solar eclipse on January 1, 1889, Wovoka, a shaman of the Northern Paiute tribe, had a vision. Claiming that God had appeared to him in the guise of a Native American and had revealed to him a bountiful land of love and peace, Wovoka founded a spiritual movement called the Ghost Dance.