To learn more about COPD in each state, click on this interactive map of the United States that shows the following statistics: number of people living with COPD number of hospitalizations from ...

States are part of countries, and countries may be grouped by other areas, like continents, hemispheres, or a political or economic body. The US is also commonly referred to in three distinct ways: as ...

The first map of the United States drawn and printed in America by an American was, until a few years ago, hardly known at all. Only seven original copies exist, and the best preserved is now on ...