What president of the United States signed the Treaty of 1818, which gave United States of America the Pembina Region?
Pembina Region The Pembina Region ( ), also referred to as the Pembina District and Pembina Department, is the historic name of an unorganized territory of land that was ceded to the United States. The area included parts of what became North Dakota, and a portion of central eastern to northeastern South Dakota. The eastern boundary was the Red River, and included the Pembina River area. The region was formerly part of British Rupert's Land and the Red River Colony (controlled by the Hudson's Bay Company), that encompassed an area then known as the Assiniboia District, from 1763 to the signing of the Treaty of 1818. The treaty transferred the region that was south of the 49th parallel from the British to the United States.
George Rogers Clark George Rogers Clark (November 19, 1752 – February 13, 1818) was a surveyor, soldier, and militia officer from Virginia who became the highest ranking American military officer on the northwestern frontier during the American Revolutionary War. He served as leader of the militia in Kentucky (then part of Virginia) throughout much of the war. Clark is best known for his celebrated captures of Kaskaskia (1778) and Vincennes (1779) during the Illinois Campaign, which greatly weakened British influence in the Northwest Territory. Because the British ceded the entire Northwest Territory to the United States in the 1783 Treaty of Paris, Clark has often been hailed as the "Conqueror of the Old Northwest".