The correct option is B
<span>he argued that the recovery was too fragile and the international situation too dangerous for him to leave his post. FDR argued that he was running for a third term in order to keep USA out of the war.</span>
After nearly four centuries of internal divisions and strife, China was reunited under the leadership of Yang Jian. A member of a respected aristocratic family, Yang Jian founded the Sui Dynasty. Yang Jian used Buddhism to help unite the kingdom.
Some would argue the Soviet Union, while others say the US. It depends how you look at the question. There are certain things that prove it was the fault of one while some prove it was the fault of another.