Edward Ullman

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An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Thanksgiving Turkey with all the sides

Why Do We Eat Turkey on Thanksgiving?

Santa Claus flying in his sleigh, christmas, reindeer

Was Santa Claus a Real Person?

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Diverse elementary school children wearing school uniforms running outside of school. Boys girls

Pro and Con: School Uniforms

Thumbnail for flags that look alike quiz Russia, Slovenia, Iceland, Norway

Flags That Look Alike

The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)

11 Banned Books Through Time

Edward Ullman

American geographer

Learn about this topic in these articles:

advocacy of central-place theory

In central-place theory
Edward Ullman introduced central-place theory to American scholars in 1941. Since then geographers have sought to test its validity. Iowa and Wisconsin have been two areas of empirical research that have come closest to meeting Christaller’s theoretical assumptions.
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