As the Revolution approached, tensions grew in the Ohio Valley. The Grand Ohio Company was built on speculation in Native American lands, and Great Britain granted tracts of Native land to veterans of the French and Indian War to pay off debts. But in 1772, Great Britain redeployed many of its western forces to the East Coast due to the increasing tensions with the colonists, removing a deterrent to illegal squatters. In 1774, Great Britain determined that these land grants could not be granted to colonial veterans, meaning that colonial veterans who had invested heavily in land speculation (such as George Washington) would lose their investment. That same year, the Quebec Act placed the lands between the Ohio River and Great Lakes under the jurisdiction of Quebec. That Spring, a group of settlers led by Daniel Greathouse committed the Yellow Creek massacre, in which thirteen women and children were killed, including the wife and pregnant sister of Tachnechdorus, who had been friendly to settlers until that time. In a particularly brutal act, Koonay, the sister of Tachnechdorus, was strung up by the wrists while her unborn baby was impaled. As expected, Tachnechdorus took revenge, and was supported by the Shawnee, who expressed discontent that they had still not been paid for their lands. Still other Shawnee fled the Scioto River valley, avoiding the anticipated war with the white settlers who suddenly surrounded them.