Sources such as diaries though not very reliable can be used if there are a large amount of them showing the same date and event. Historical books written about the event especially those closer to the time would be able to help determine that the date is accurate as well.
Answer:
Early Tamil-Siva bhakti poets influenced Hindu texts that came to be revered all over India. ... In turn it influenced devotional practices in Islam such as Sufism, and other religions in India from 15th century onwards, such as Sikhism, Christianity, and Jainism.
Answer:
The name of the power is Papal Supremacy
D as a source of irritation helps