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.
Congress, however, feared that the new statesâ10 in the Northwest as well as Kentucky, Tennessee and Vermontâwould quickly gain enough power to outvote the old ones and never passed the measure. Three years later, the Northwest Ordinance proposed that three to five new states be created from the Northwest Territory. Instead of adopting the legal constructs of an existing state, each territory would have an appointed governor and council.