A civilization is a complex culture in which large numbers of human beings share a number of common elements. Historians have identified the basic characteristics of civilizations. Six of the most important characteristics are: cities, government, religion, social structure, writing and art.
Dendrochronology is the science of determining age by examining growth rings of trees.
Propaganda war is a branch of public relations devoted to manipulating people's attitude toward a war<span> or </span>war<span> in general, rather than engaging in open dialogue. This includes both pro-</span>war propaganda<span>, </span><span>and anti-</span>war propaganda.
He believed that creating new jobs would help the Americans survive the Depression. He had the Hoover Dam built in hopes of ending the depression :)
