The leadership of Genghis Khan, the use of the stirrup, and excellent horsemanship skills all contributed directly to the "<span>(4) rise of the Mongol Empire"</span>
The nation united the wandering Mongol and Turkic clans of historical Mongolia under the guidance of Genghis Khan, who was declared leader of all Mongols in 1206. The nation grew quickly under his command and then under his descendants, who sent attacks in every way. The broad intercontinental nation combined the east with the west with an imposed Pax Mongolic, or Mongol Peace, admitting business, technologies, assets, and beliefs to be distributed and transferred across Eurasia.
Without the downward force of gravity, the body works considerably less, causing muscle deterioration and loss of bone density. In a single month in space, astronauts can lose as much bone mass as a postmenopausal woman does in a year