In April 1865, Jefferson Davis and most of his cabinet fled which capital city?

Which author wrote the 1863 novel "Five Weeks in a Balloon"? Which Irish poet lived from 1865 to 1939? In 1865, Robert E. Lee surrendered at which Virginia site? Which Union general led the 1865 march through the Carolinas after his "March to the Sea"? Who reportedly shouted "Sic semper tyrannis! The South is avenged!" in 1865? In 1868, which president granted an unconditional pardon to all who had rebelled in the Civil War? Which 1868 Wilkie Collins novel is about a mysterious stolen gem? Which Paris music hall, famous for risque revues, opened in 1869?