The Mongol Empire controlled more territory than any empire before the 13th century because of its adaptability, excellent communications, and its reputation for ferocity in its ability to control a large areas.
The Mongol Empire emerged from the unification of several nomadic tribes in the Mongol homeland under the leadership of Genghis Khan. The Mongols conquered vast areas of Asia in the 13th and 14th century CE with the help of its fast light cavalry and unbeatable bowmen. The major significant contribution to their success was the adoption of their enemies' tactics and technology that allowed them to defeat established military powers in China, Persia, and Eastern Europe. They adapted to different challenges and terrain, the Mongols became adept at both siege and naval warfare, very different pursuits from their nomadic origins on the Asian steppe. In addition, diplomacy, espionage, and terror were used in equal measure to win many a battle before it had even begun.
<span>Isolationism in America was based on two beliefs. The first was the view that the United States should avoid any political commitment that tied American policy and action to the policies and actions of other nations. The second was a pervasive belief that the central aim of American foreign policy was to avoid foreign wars at all costs. </span>
New industried created mass production techniques which created cheaper, mass-produced products and increased employment stimulated further the demand for goods, and thus created the consumer boom which led to economic prosperity.
