I guess (c) the attack on pear harbor
The answer is; renegotiate the initial agreement.
<em>Sorry if I am wrong, in advance, I hope this helped! :)</em>
A government could use social media to promote citizen participation by using something like Facebook to encourage them. <span />
According to Pope Urban II, the best way to get people to unite is to give them a common enemy.
Pope Urban II pitched the Crusades as a religious duty with a side of fighting.
The Black Death was most likely spread through Western Europe by rats and their fleas.
The Black Death was the second major epidemic of its time. The first known epidemic of of the disease that also caused "The Black Death" was The Plague of Justinian.