Storia
Between story or history, I’m guessing History.

La Montagna Spoletina racchiude in sé millenni di storia religiosa.
1. The Spoleto Mountain {________} millennia of religious history.
1a. racchiudere: to contain
1b. : oneself; itself; himself; herself
1c. in: in; to; of; as
1d. racchiude in sé: to contain in itself; or as Bing Translate figures it:
The Spoleto Mountain embodies millennia of religious history.

Le sue peculiarity geografiche … l’hanno eletta spazio privilegiato per la vita di preghiera e meditazione.
2. Best to drop out the interpolated phrase if I hope to find the subject & verb:
2a. Its peculiar geographies … {some self-reflexive action} privileged space for the life of prayer? and meditation.
2b. Loro hanna = They have / Loro hanna eletta = They have elected
2c. Loro l’hanno eletta = They elected her
2d. Loro l’hanno eletta spazio = They have elected space
2e. Its peculiar geographies have made a privileged space for the life of prayer and meditation.