<span>Albert Einstein became famous for the theory of relativity, which laid the basis for the release of atomic energy. </span>
The Mongols could use either a massive army for battles or use smaller groups for ambushes (like guerilla warfare) as the need arose. Also, the Mongols were very well trained in the use of horses and bows. Also, from childhood the Mongols were taught to shoot and ride.
6. The decline of feudalism occurred due to a number of events which occurred during the Medieval era of the Middle Ages. Feudalism was based on the division of land by the king to nobles and vassals in return for their military service under the Feudal Levy.
7. New technologies were used during the Hundred Years' War which helped France win. When the war ended feudalism declined due to the increasing power of monarchies caused by the Hundred Years' War.
8. The end of the Middle Ages came about because of the black plague, the development of the printing press and the decline of the Catholic church.
9. New technologies such as electricity became a new idea. Telegraphs, light bulbs and so on.
10. Age of Discovery
