B because more powerful weapons on one side leading to less power to the opposing side
It was "Albert Einstein" who <span>wrote to FDR in the summer of 1939 alerting him to a new form of energy, since Einstein was warning and informing FDR of the potential of "atomic energy". </span>
The Hagia Sophia.
Hope it helped
Otrar-- located in central Asia, north of the Indian peninsula.
Genghis Khan organized and led the Mongols through an Asian conquest in the 13th century. After conquering China, the Mongols moved west taking over central and western Asia. The city of Otrar was conquered in 1219, four years after the conquest of what is now Beijing. The city held on in defense for months but eventually fell with the leadership surrendering.
The answer is six weeks :)