The Blood Compact is a historical ritual that symbolizes friendship and alliance between two parties. It involves the participants making a small incision on their arms or hands, allowing their blood to mix, and then drinking the combined blood from a shared cup. This act signifies a deep bond and mutual commitment, often used in various cultures to establish trust and loyalty. One of the most famous instances of the Blood Compact occurred in the Philippines between the Spanish explorer Miguel López de Legazpi and the local chieftain Datu Sikatuna in 1565. This event is celebrated as a significant moment in Philippine history, representing the beginning of diplomatic relations between the Spanish and the indigenous people.