Which event started the pequot war?

The division of the fur trade was mostly the spark of the Pequot war. The Pequot war is a conflict between the Pequot tribe and the alliances that the European colonists have made in Massachusetts Bay, Plymouth, and Saybrook colonies and their native tribe alliance with the Mohegan tribes. 

It was a dispute that the Pequots lost; where about an approximate of 700 of these tribesmen were either killed or sent to slavery. Access to the control of fur trade divided the two tribes when they both decided to realign with English trade sources. The Pequots made an alliance with the Dutch, while the Mohegan made an alliance with the English.