Achondroplasia is one of the most common types of dwarfism. Learn about its causes, diagnosis, and treatment. Achondroplasia is one of the most common types of dwarfism.
Westward Expansion (1807-1912) The Surge West. Summary. The westward movement of the American population occurred in intermittent flurries of settlement. The first began early in the nation's history, resulting in the statehood of Vermont, Kentucky, Tennessee, and Ohio, all of which were admitted to the Union between 1791 and 1803.
The Midwest includes the states that were part of the Northwest Ordinance in the 19th century. Midwestern states that are part of both the East North Central Division and the Great Lakes region include Illinois, Indiana, Michigan, Ohio and Wisconsin. The West North Central Division includes Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska and South Dakota.