I believe the answer may be D. In taking action, one must not worry about success or failure.
It was made by europe people to create/order a balance of power they wanted to turn it back to the way things were
Im sure its due to all of the oil in the middle east.
Mongols favored trade even before Ghenghis khan, they hunted/herded very few were weapon makers or potters/weavers, many items they needed to living had to be traded. As Ghenghis khan rose to he realized the Mongol army was gonna need many things for battles. To facilitate trade Ghenghis offered protection to merchants that came from east and west, offered higher status for merchants allowed by the Chinese or Persians who despised trade and traders.
C. A person must be at least 30 years old to run for the U.S. Senate. They also have to have been a U.S. citizen for at least 9 years.