The United States can be thought of as a union of diverse and sovereign regions, of sovereign people, who agree on the basic principles of democracy, republicanism, federalism, and liberalism in general.
Geography and places is a broad category that includes all natural and manmade locations. It’s two broad subdivisions are Physical Geography (naturally occurring geography) and Human Geography (man made geography).
The song “Hail, Columbia” is one of several songs once considered an unofficial national anthem of the United States.
While the term Columbia sometimes refers to the whole New World (all the Americas), historically the United States of America was called Columbia specifically (especially after the 1730s when Christopher Columbus became increasingly idealized for his pioneering spirit).
Plato can be understood as the father of rationalism and political philosophy (political idealism), and Aristotle, his student, the father of empiricism and political science (political realism).
The Coriolis Effect causes air to spin different directions in each Hemisphere. This can only affect large systems like wind and ocean currents.