With whom did cornwallis join forces in virginia?
a. nathanael greene
b. benedict arnold
c. george washington
d. general lafayette

It was with "b. Benedict Arnold" that General Cornwallis joined forces in Virginia, since although Cornwallis began as a member of the continental army, he defected to the British side. 

On april 20, 1814, the dethroned emperor left france for the isle of  elba, where he was exiled under the terms of the treaty of fontainebleau.napoleon  would be allowed to ruleelba, which had 12,000 inhabitants. perhaps cruelly, the treaty allowed him to retain the title "emperor."