Definition of rector. 1 : one that directs : leader. 2a : a member of the clergy (as of the Protestant Episcopal Church) in charge of a parishb : an incumbent of a Church of England benefice in full possession of its rightsc : a Roman Catholic priest directing a church with no pastor or one whose pastor has other duties.
The Missouri River is the longest river in the United States. It flows for 2,466 miles (3,968 kilometers). Its source lies in the Rocky Mountains of southwestern Montana; the river is formed by the confluence of the Jefferson, Madison, and Gallatin rivers at Three Forks, Montana.
Great Plains Region. The journey up and down the Missouri River was to comprise 5,000 miles of the expedition's total mileage of 8,000. It was their waterway north and west across the territory called the Louisiana Purchase, land the United States had recently purchased from France for $15 million, and which doubled the size of the country.