Outside the "pays d'en haut", most warriors of the influential Iroquois Confederacy did not participate in Pontiac's War because of their alliance with the British, known as the "Covenant Chain". However, the westernmost Iroquois nation, the Seneca tribe, had become disaffected with the alliance. As early as 1761, the Seneca began to send out war messages to the Great Lakes and Ohio Country tribes, urging them to unite in an attempt to drive out the British. When the war finally came in 1763, many Seneca were quick to take action.