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.
When there were 60,000 people living in the territory, it could apply for statehood. These procedures were used as the U.S. expanded westward. Ohio, Indiana, Michigan, Illinois, and Wisconsin are the five states that were created as a result of the Northwest Ordinance.