Some of the rituals and sacrifices of later Vedic period were-
1. Asvamedha- A king performed this sacrifice, which meant control over the area in which the royal horse ran uninterrupted. This ceremony lasted for three days at the end of which the horse sacrifice was performed.
2. Vajapeya- A chariot race was performed in which the king must win the race. It was meant to re-establish a king's supremacy over his people.
3. Rajasuya- A sacrifice ceremony which conferred supreme power on the king.