In the United States the unofficial beginning and ending dates of national economic expansions have been defined by an American private nonprofit research organization known as the National Bureau of Economic Research (NBER).he NBER defines an expansion as a period when economic activity rises substantially, spreads across the economy, and typically lasts for several years. During the 19th century, the United States experienced frequent boom and bust cycles.
chronologize definition: the entire process of setting up order in events based on the time occurrence for the occasions.; To arrange in historic order, as events with their dates.; establish the orderâ¦
Steganography is the science of hiding information. Whereas the goal of cryptography is to make data unreadable by a third party, the goal of steganography is to hide the data from a third party. In this article, I will discuss what steganography is, what purposes it serves, and will provide an example using available software.