During this event, one of its namesake leaders was shot in the thigh by Pierre Cruzatte, who had mistaken him for an elk. One member of the group that partook in this event was a slave named York, and another notable member of that group was the wife of Toussaint Charbonneau. This event included the distribution of "Indian Peace Medals," and it was accomplished by following the Columbia and Missouri Rivers, with the help of natives such as Sacagawea. For 10 points, name 
During this event, one of its namesake leaders was shot in the thigh by Pierre Cruzatte, who had mistaken him for an elk. One member of the group that partook in this event was a slave named York, and another notable member of that group was the wife of Toussaint Charbonneau. This event included the distribution of "Indian Peace Medals," and it was accomplished by following the Columbia and Missouri Rivers, with the help of natives such as Sacagawea. For 10 points, name this event, the expedition of land in the Louisiana Purchase by members of the Corps of Discovery.
During this event, one of its namesake leaders was shot in the thigh by Pierre Cruzatte, who had mistaken him for an elk.
{Lewis and Clark} Expedition [accept {Corps of Discovery} expedition before mention]