1. Expansion of Christianity:
Christianity experienced remarkable growth and expansion during this period. The rise of the Roman Empire played a crucial role in spreading Christianity, as the empire adopted it as the state religion in the 4th century. The conversion of Emperor Constantine and the subsequent establishment of the Nicene Creed solidified Christianity's influence and led to the construction of magnificent churches and cathedrals.

2. Rise of Islam:
The 7th century witnessed the emergence and rapid expansion of Islam. The Prophet Muhammad founded Islam, and the Quran was revealed to him during this period. Islam spread across the Arabian Peninsula and expanded into territories that were previously under Christian and Jewish rule. The conquests of Muslim armies led to the establishment of the Islamic Caliphate, further facilitating the spread of Islam.

3. Buddhist Revival:
Buddhism experienced a revival during this period in various parts of Asia. In India, Buddhism faced a decline due to the dominance of Hinduism. However, Buddhism flourished in other regions, such as China, Japan, and Southeast Asia. The spread of Buddhism was facilitated by the translation of Buddhist texts and the construction of grand Buddhist temples and monasteries.

4. Hindu Renaissance:
During this period, Hinduism underwent a renaissance in India. The Bhakti movement, which emphasized personal devotion to deities, gained prominence. Prominent saints and philosophers, such as Ramanuja, Shankaracharya, and Chaitanya Mahaprabhu, played significant roles in the revival of Hinduism. Temples dedicated to various Hindu deities were constructed, and religious texts were translated into vernacular languages.

5. Sikhism:
Sikhism emerged as a distinct religion during this period. Guru Nanak, the founder of Sikhism, preached a message of monotheism, social equality, and the rejection of rituals. The Sikh community or "Sangat" grew under the guidance of the ten Sikh Gurus. The construction of the Golden Temple in Amritsar became a central place of worship for Sikhs.