Which time period marked the shift from collective sacrifices to individual sacrifices by household heads?

c. 1000 and 500 BCE

In the ancient times, various thought systems, religious beliefs, and practices coexisted, including the early Vedic tradition, renowned through the Rigveda, a compilation dated between c. 1500 and 1000 BCE. Comprising hymns dedicated to numerous deities, particularly Agni, Indra, and Soma, these verses were chanted during sacrificial ceremonies. People prayed for blessings such as cattle, sons, good health, and long life during these rituals.

Initially, sacrifices were conducted collectively, but later (c. 1000 BCE-500 BCE onwards), some became the responsibility of household heads to ensure the well-being of their families. On the other hand, more intricate sacrifices, like the rajasuya and ashvamedha, were performed by chiefs and kings, relying on Brahmana priests to oversee the rituals.