NATIONAL NORTH DAKOTA DAY 2021On April 19th, National North Dakota Day recognizes the Peace Garden State.Long before Lewis and Clark traveled up the Missouri River, the Mandan, Hidatsa, and Arikara arrived in North Dakota. During the Corps of Discovery, the team camped at Fort Mandan along the Missouri River for the winter. Here, their translators, Sacagawea and Charbonneau, joined the expedition. Sacagawea would also give birth to her son, Jean Baptiste.for know to more about this place ,you can check out on intended and get the whole knowledge.