An 1862 law freeing Washington, D.C.'s slaves offered to help them move to Haiti or which African country?

An 1855 earthquake raised the harbor bed of which New Zealand city by over a yard, allowing land to be reclaimed? An 1855 entry in which Scottish missionary's African journal mentions the discovery of Victoria Falls? An 1859 gold strike brought miners to Cherry Creek, the site of which future state capital? An 1861 song urged Maryland to avenge the "patriotic gore that flecked the streets" of which city? An 1867 flood in which state allowed a steamboat to travel down Chattanooga's main street? Mussorgsky's 1867 symphonic composition is about a night on what? An 1868 definition described which term as men "traveling with little luggage and less character" to profit from the si… Which author's 1870 novel mentions Moby Dick as well as a sea monster called a kraken?