Answer:
The Yuan Dynasty was the ethnic-Mongolian dynasty that ruled China from 1279 to 1368 found in 1271 by Kublai Khan, the grandson of Genghis Khan
The emergence of the Mongol dynasty dates to 1206, when Genghis Khan was able to unify under his leadership all Mongols in the vast steppe lands north of China. Genghis began encroaching on the Jin dynasty in northern China in 1211 and finally took the Jin capital of Yanjing (or Daxing; present-day Beijing) in 1215.
Explanation:
Elizabeth ascended the throne at the age of 25.
It was a better and quicker way to send important or causal messages.
There are many reasons for the US to enter world war 1, including:
Unrestricted warfare: The german submarine fleet continued to sink US and other neutral ships that had supplies to send to the Allies to try to cut off Allied material power.
Sinking of Lusitania: With 128 Americans on board, the Germans sank the Lusitania, which caused outrage among the US citizens. The Germans had to stop unrestricted warfare for awhile. However, with Germany losing, they had to change to a more drastic measure, and continued it.
Zimmermann telegram: The last straw to the US, in which the German prime minister (?) sent a telegram to Mexico, asking it to join Central power side, in exchange for help to take back all the and they lost to the US during the Mexican-American war.
hope this helps