Which description of a change to U. S. boundaries that took place between 1800 and 1821 is inaccurate? A. The Louisiana Purchase extended America's holdings to the Rocky Mountains.

B. Florida became a U. S. territory after it was purchased from Spain by President James Monroe.

C. Growing populations led to the admission of new states in the South and Midwest.

D. The United States bought the Oregon Territory from France for $15 million.