The answer is C. <span>C. Increased trade and foreign influences
The pax Mongolic is happened after the Mongols finished the majority of their conquest. This time is also known as the mongolian peace period when wars rarely happened and the mongols started to build their economic growth and trading relationship with other region.
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1990-2000 was the largest population boom
An astrolabe is a primitive angle-measuring tool. It can be used to - very in-exactly! - measure the altitude above the horizon of a celestial body like the Sun, Moon or Polaris in order to calculate your position.
Medieval gunners used the astrolabe to calculate the height of towers and buildings, in order to more accurately aim their cannons.
The responsibilities<span> of the </span>Federal Reserve<span> include influencing the supply of money and credit; regulating and supervising financial institutions; serving as a banking and fiscal agent for the United States government; and supplying payments services to the public through depository institutions like banks, </span>
